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Genus Debroyerella gen. nov. Type species. Cheirimedon similis Thurston, 1974, by present designation. Included species. Debroyerella includes 3 species: D. fougneri (Walker, 1903); D. similis (Thurston, 1974); D. solidus (Andres, 1986). Etymology. Named for our friend Claude De Broyer in recognition of his life-long contribution to Antarctic amphipod biology. Gender feminine. Diagnostic description. Antenna 1 peduncle article 1 long (more than twice as long as broad); flagellum with weak 1 -field callynophore, or callynophore absent. Mandible molar columnar, with fully triturating oval surface; palp attached midway. Maxilliped outer plate very small, not reaching article 3 of palp. Gnathopod 1 subchelate, coxa large, almost as large as coxa 2, not tapering distally, anterior margin slightly concave; carpus compressed. Telson moderately cleft. Remarks. With a subchelate gnathopod 1, displaying a compressed carpus and large propodus, Debroyerella is very similar to Abyssorchomene De Broyer, 1984 and Koroga Holmes, 1908. Koroga differs in having a short (less than 1.5 �� longer than broad) antenna 1 peduncle article 1, a well-developed 2 -field callynophore, a mandible molar that forms a setose tongue, and a notched telson. Species of Abyssorchomene also have a short antenna 1 peduncle article 1 and strong 2 -field callynophore. Distribution. Antarctica., Published as part of Lowry, J. K. & Kilgallen, N. M., 2015, Debroyerella gen. nov. and Ulladulla gen. nov., two new lysianassoid genera (Crustacea, Amphipoda, Lysianassoidea), pp. 153-162 in Zootaxa 3920 (1) on page 154, DOI: 10.11646/zootaxa.3920.1.7, http://zenodo.org/record/231901, {"references":["Thurston, M. H. (1974) Crustacea Amphipoda from Graham Land and the Scotia Arc, collected by Operation Tabarin and the Falkland Islands Dependencies Survey, 1944 - 59. British Antarctic Survey Scientific Reports, 85, 1 - 89.","Walker, A. O. (1903) Amphipoda of the ' Southern Cross' Antarctic Expedition. Journal of the Linnean Society of London, Zoology, 29, 38 - 64, pls. 37 - 11.","Andres, H. G. (1986) Atylopsis procerus sp. n. und Cheirimedon solidus sp. n. aus der Weddell See sowie Anmerkungen zu Orchomenella pinguides Walker, 1903. (Crustacea: Amphipoda: Gammaridea). Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 83, 117 - 130.","De Broyer, C. (1984) Evolution du complexe Orchomene Boeck (Amphipoda Lysianassidae). Annales de la Societe Royale Zoologique de Belgique, 114, 197 - 198.","Holmes, S. J. (1908) The Amphipoda collected by the U. S. Bureau of Fisheries steamer \" Albatross \" off the west coast of North America, in 1903 and 1904, with descriptions of a new family and several new genera and species. Proceedings of the United States National Museum, 35, 489 - 543. http: // dx. doi. org / 10.5479 / si. 00963801.35 - 1654.489"]}

Debroyerella similis (Thurston, 1974) Cheirimedon fougneri.��� Walker, 1907: 9.��� Schellenberg, 1926: 263, fig. 13.��� K.H. Barnard, 1930: 326.��� Nicholls, 1938: 23 (in part).��� Shoemaker, 1945: 289 (in part). Cheirimedon similis Thurston, 1974: 54, figs 19 f���i, 20, 21.��� Lowry & Bullock, 1976: 86.��� Lincoln & Hurley, 1981: 108.��� De Broyer, 1983: 185, figs 50���52.��� Slattery & Oliver, 1986: 173.��� De Broyer & Jażdżewski, 1993: 66.��� Barnard & Karaman, 1991: 475. not Cheirimedon similis.��� Andres, 1983: 185. (= C. solidus). Types. Holotype, female, 19 mm, NHM 1972: 88:l. Allotype, male, 16 mm, NHM 1972: 89: 1. Paratypes, NHM 1972: 90: 1000; NHM 1972: 91:l, NHM 1972: 92: 1000; NHM 1907: 6: 6: 76-81, NHM 1930: 8: 1: 18-19. Other paratypes are held by the British Antarctic Survey (14 specimens); the Institute of Oceanographic Sciences (6 specimens); 11 specimens ZMB 20310; 10 specimens ZMUC. Type locality. Marguerite Bay, Stonington Island, Antarctic Peninsula. Description. Head, lateral cephalic lobe rounded; eyes reniform. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 6 -articulate; primary flagellum with weak 1 -field callynophore, or without callynophore; robust setae absent from proximal articles; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae absent; calceoli absent. Labrum (epistome and upper lip) separate; epistome produced equally with upper lip, straight; upper lip not produced. Mandible molar an (?) asymmetrically reduced column, proximally setose, distally triturating; left lacinia mobilis a long, slender robust seta. Maxilla 1 outer plate setal-teeth in a welldeveloped 7 / 4 crown arrangement; palp distal margin with apical robust setae. Maxilla 2 inner plate significantly shorter than outer plate. Maxilliped outer plate with 2 long (one slender, one broad) apical robust setae. Gnathopod 1 coxa large, about as long as coxa 2, subrectangular with straight to very slightly concave anterior margin, not expanded distally; basis sparsely setose along anterior margin; ischium short; propodus margins subparallel, palm slightly acute, entire, straight; dactylus simple. Gnathopod 2 subchelate; propodus palm transverse, straight; dactylus fitting palm. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa slightly longer than broad, producing posterior lobe; basis longer than broad, posterior margin weakly serrate; carpus 2.5 �� longer than wide; propodus 4 �� times longer than wide. Pereopod 6 carpus 3 �� longer than wide; propodus 3.5 �� times longer than wide. Pereopod 7 basis posterior margin evenly rounded, posterodistally produced less than halfway along merus; carpus 2.5 �� longer than wide; propodus 3 �� times longer than wide. Epimeron 3 posterior margin smooth or minutely serrate, posteroventral corner subquadrate and forming a very weak spine. Urosomite 1 not projecting over urosomite 2, with anterodorsal notch and slightly rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 inner ramus slightly shorter than outer ramus, outer ramus article 2 short, with plumose setae on both rami. Telson subequal in length and width, cleft to 55 % of length, with dorsal robust setae, and 1 apical robust seta on each lobe. Depth range. 7��� 385 m. Remarks. See remarks under D. fougneri for a comparison with that species. Debroyerella similis can be distinguished from D. solidus by the shorter and more deeply cleft telson, and the narrower coxa and propodus of gnathopod 1. Distribution. Antarctica. Gauss winter station, Davis Sea (Schellenberg 1926); McMurdo Sound, Ross Sea (Walker 1907); Stonington Island, Antarctic Peninsula (Thurston 1974)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2015, Debroyerella gen. nov. and Ulladulla gen. nov., two new lysianassoid genera (Crustacea, Amphipoda, Lysianassoidea), pp. 153-162 in Zootaxa 3920 (1) on pages 155-156, DOI: 10.11646/zootaxa.3920.1.7, http://zenodo.org/record/231901, {"references":["Thurston, M. H. (1974) Crustacea Amphipoda from Graham Land and the Scotia Arc, collected by Operation Tabarin and the Falkland Islands Dependencies Survey, 1944 - 59. British Antarctic Survey Scientific Reports, 85, 1 - 89.","Walker, A. O. (1907) Crustacea III. - Amphipoda. National Antarctic Expedition 1901 - 1904, Natural History, 3, 1 - 38, pls. 31 - 13.","Schellenberg, A. (1926) Die Gammariden der Deutschen Sudpolar-Expedition 1901 - 1903. Deutsche Sudpolar-Expedition, 18, 235 - 414.","Barnard, K. H. (1930) Crustacea. Part XI. - Amphipoda. British Antarctic (\" Terra Nova \") Expedition, 1910, Natural History Reports, Zoology, 8, 307 - 454.","Nicholls, G. E. (1938) Amphipoda, Gammaridea. Australasian Antarctic Expedition 1911 - 14, Scientific Reports, Series C, 2, 1 - 145.","Shoemaker, C. R. (1945) Amphipoda of the United States Antarctic Service Expedition 1939 - 1941. Proceedings of the American Philosophical Society, 89, 289 - 293.","Lowry, J. K. & Bullock, S. (1976) Catalogue of the marine gammaridean Amphipoda of the Southern Ocean. Royal Society of New Zealand Bulletin, 16, 1 - 187.","Lincoln, R. J. & Hurley, D. E. (1981) The calceolus, a sensory structure of gammaridean amphipods (Amphipoda: Gammaridea). Bulletin of the British Museum (Natural History), Series Zoology, 40, 103 - 116.","De Broyer, C. (1983) Recherches sur la systematique et l'evolution des crustaces amphipodes gammarides antarctiques et subantarctiques. PhD Thesis, Universite de Louvain, 468 pp.","Slattery, P. N. & Oliver, J. S. (1986) Scavenging and other feeding habits of lysianassid amphipods (Orchomene spp.) from McMurdo Sound, Antarctica. Polar Biology, 6, 171 - 177. http: // dx. doi. org / 10.1007 / BF 00274880","De Broyer, C. & Jazdzewski, K. (1993) Contribution to the marine biodiversity inventory. A checklist of the Amphipoda (Crustacea) of the Southern Ocean. Documents de Travail de l'Institut Royal des Sciences Naturelles de Belgique, 73, 1 - 154.","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.91","Andres, H. G. (1983) Die Gammaridea (Crustacea: Amphipoda) der Deutschen Antarktis-Expeditionen 1975 / 76 und 1977 / 78. 3. Lysianassidae. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 80, 183 - 220."]}

Debroyerella solidus (Andres, 1986) Cheirimedon similis.��� Andres, 1983: 185. Cheirimedon solidus Andres, 1986: 120, figs 5, 6.��� De Broyer & Jażdżewski, 1993: 66.��� De Broyer et al., 2007: 138. Types. Holotype, male, 11 mm, ZMH K 33164. Type locality. Weddell Sea, Antarctica (77 ��36.0'S 18 ��39.3'W). Description. Head, lateral cephalic lobe rounded; eyes reniform. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 4 -articulate; primary flagellum with weak 1 -field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae present; calceoli absent. Labrum (epistome and upper lip) separate; epistome produced equally with upper lip, straight; upper lip produced, rounded apically. Mandible molar an (?) asymmetrically reduced column, proximally setose, distally triturating; left lacinia mobilis a long, slender robust seta. Maxilla 1 outer plate setal-teeth in a well-developed 7 / 4 crown arrangement; palp distal margin with apical robust setae. Maxilla 2 inner plate significantly shorter than outer plate. Maxilliped outer plate with 2 long (one slender, one broad) apical robust setae. Gnathopod 1 coxa large, about as long as coxa 2, subrectangular with slightly concave anterior margin, slightly expanded distally; basis sparsely setose along anterior margin; ischium short; propodus margins subparallel, palm transverse or slightly acute, entire, convex, minutely serrate; dactylus simple. Gnathopod 2 subchelate; propodus palm transverse, straight; dactylus fitting palm. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa about as long as broad, producing slight posterior lobe; basis longer than broad, posterior margin weakly serrate; carpus 2 �� longer than wide; propodus 3 �� times longer than wide. Pereopod 6 carpus 2.5 �� longer than wide; propodus 3 �� times longer than wide. Pereopod 7 basis posterior margin evenly rounded, posterodistally produced less than halfway along merus; carpus 2.5 �� longer than wide; propodus 3 �� times longer than wide. Epimeron 3 posterior margin smooth or minutely serrate, posteroventral corner subquadrate. Uropod 2 inner ramus without constriction. Uropod 3 inner ramus slightly shorter than outer ramus; outer ramus article 2 short, with plumose setae on both rami. Telson distinctly longer than broad (length 1.6 �� width), cleft to 35 % of length, with 1 apical robust seta on each lobe. Depth range. 0���201 m in water depth of 1900 m. Remarks. Most similar to D. fougneri, Debroyerella solidus differs from that species by the shorter and stouter carpus and propodus of pereopods 5���7. Distribution. Antarctica. Scotia-Faunengebiet and Weddell Sea (Andres 1986)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2015, Debroyerella gen. nov. and Ulladulla gen. nov., two new lysianassoid genera (Crustacea, Amphipoda, Lysianassoidea), pp. 153-162 in Zootaxa 3920 (1) on page 156, DOI: 10.11646/zootaxa.3920.1.7, http://zenodo.org/record/231901, {"references":["Andres, H. G. (1986) Atylopsis procerus sp. n. und Cheirimedon solidus sp. n. aus der Weddell See sowie Anmerkungen zu Orchomenella pinguides Walker, 1903. (Crustacea: Amphipoda: Gammaridea). Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 83, 117 - 130.","Andres, H. G. (1983) Die Gammaridea (Crustacea: Amphipoda) der Deutschen Antarktis-Expeditionen 1975 / 76 und 1977 / 78. 3. Lysianassidae. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 80, 183 - 220.","De Broyer, C. & Jazdzewski, K. (1993) Contribution to the marine biodiversity inventory. A checklist of the Amphipoda (Crustacea) of the Southern Ocean. Documents de Travail de l'Institut Royal des Sciences Naturelles de Belgique, 73, 1 - 154.","De Broyer, C., Lowry, J., Jazdzewski, K. & Robert, H. (2007) Catalogue of the Gammaridean and Corophiidean Amphipoda (Crustacea) of the Southern Ocean with distribution and ecological data. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Biologie, 11 (Supplement 1), 1 - 325"]}

Debroyerella fougneri (Walker, 1903) Cheirimedon fougneri Walker, 1903: 41, pl. 7, figs 1���6.��� Stebbing, 1906: 720.��� Nicholls, 1938: 23 (in part, part = C. similis).��� Shoemaker, 1945: 289 (in part, part = C. similis).��� J.L. Barnard, 1958: 90.��� Emison, 1968: 203, fig. 10, tables 10, 12 (ecology).��� J.L. Barnard, 1969: 314.��� Thurston & Allen, 1969: 357.��� Bellan-Santini, 1972 b: 689, pls 6, 7.��� Arnaud, 1974: 572, 648.��� Thurston, 1974: 50, figs 17, 18, 19 a���e, table 1.��� Lowry & Bullock, 1976: 86.��� De Broyer, 1983: 182.��� Barnard & Karaman, 1991: 475.��� Klages, 1991: 50.��� De Broyer & Jażdżewski, 1993: 66.��� Johnson et al., 2001: table 3.��� La Mesa et al., 2004: 724, table 2 (ecology).��� De Broyer et al. 2007: 137. not Cheirimedon fougneri. Walker, 1907: 9.��� Schellenberg, 1926: 263, fig. 13.��� K.H. Barnard, 1930: 326. (= C. similis). Types. Syntypes, NHM 1903: 10: 15: 13���15 (9 specimens in alcohol + 11 slides). Type locality. Ross Sea (78 �� 35 'S), surface. Description. Head, lateral cephalic lobe rounded; eyes reniform. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 5 -articulate; primary flagellum with weak 1 -field callynophore, or without callynophore; robust setae absent from proximal articles; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae present; calceoli absent. Labrum (epistome and upper lip) separate; epistome produced equally with upper lip, straight; upper lip not produced. Mandible molar an asymmetrically reduced column, proximally setose, distally triturating; left lacinia mobilis a long, slender robust seta. Maxilla 1 outer plate setalteeth in a well-developed 7 / 4 crown arrangement; palp distal margin with apical robust setae. Maxilla 2 inner plate significantly shorter than outer plate. Maxilliped outer plate with 2 long (one slender, one broad) apical robust setae. Gnathopod 1 coxa large, about as long as coxa 2, subrectangular with slightly concave anterior margin, slightly expanded distally; basis without setae along anterior margin; ischium short; propodus large, margins subparallel, palm slightly acute, entire, subtly sinusoidal, with small, irregular serrations; dactylus simple. Gnathopod 2 subchelate; propodus palm transverse to slightly obtuse, slightly concave; dactylus fitting palm. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa about as long as broad, posterior lobe slightly produced; basis longer than broad, posterior margin weakly serrate; carpus 4 �� longer than wide; propodus 5 �� longer than wide. Pereopod 6 carpus 4 �� longer than wide; propodus 5 �� longer than wide. Pereopod 7 basis posterior margin evenly rounded, posterodistally produced less than halfway along merus; carpus 4 �� longer than wide; propodus 4 �� longer than wide. Epimeron 3 posterior margin smooth or very minutely serrate distally, posteroventral corner forming small, weak spine. Urosomite 1 not projecting over urosomite 2, with anterodorsal notch and slightly rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 inner ramus two-thirds as long as outer ramus; outer ramus article 2 short, with plumose setae on both rami. Telson distinctly longer than broad (length 1.4 �� width), cleft to 35 % of length, without dorsal robust setae, with 1 apical robust seta on each lobe. Male (sexually dimorphic characters). Calceoli present on antennae 1 and 2. Depth range. 0 m, surface (De Broyer et al. 2007). Remarks. The variation of character states between the three currently described species of Debroyerella gen. sp. nov. is extremely subtle, and the species are morphologically very similar. Debroyerella fougneri is distinguished from D. similis (Thurston, 1974) by the broader and more distally expanded gnathopod 1 coxa, the shallower coxa of pereopod 5 and the longer and more weakly cleft telson. The same species can be separated from D. solidus (Andres, 1986) by the less convex and more sinuous palm of gnathopod 1, and the longer and more slender carpus and propodus of pereopods 5���7. Distribution. Antarctica. Ad��lie Coast (Nicholls 1938); Palmer Archipelago (Shoemaker 1945); Shackleton Glacier (Nicholls 1938); Ross Sea (Shoemaker 1945, La Mesa et al. 2004); Weddell Sea (Klages 1991); Davis Sea (Johnson et al. 2001)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2015, Debroyerella gen. nov. and Ulladulla gen. nov., two new lysianassoid genera (Crustacea, Amphipoda, Lysianassoidea), pp. 153-162 in Zootaxa 3920 (1) on pages 154-155, DOI: 10.11646/zootaxa.3920.1.7, http://zenodo.org/record/231901, {"references":["Walker, A. O. (1903) Amphipoda of the ' Southern Cross' Antarctic Expedition. Journal of the Linnean Society of London, Zoology, 29, 38 - 64, pls. 37 - 11.","Stebbing, T. R. R. (1906) Amphipoda. I. Gammaridea. Das Tierreich, 21, 1 - 806.","Nicholls, G. E. (1938) Amphipoda, Gammaridea. Australasian Antarctic Expedition 1911 - 14, Scientific Reports, Series C, 2, 1 - 145.","Shoemaker, C. R. (1945) Amphipoda of the United States Antarctic Service Expedition 1939 - 1941. Proceedings of the American Philosophical Society, 89, 289 - 293.","Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.","Emison, W. B. (1968) Feeding preferences of the Adelie Penguin at Cape Crozier, Ross Island. Antarctic Research Series, 12, 191 - 212.","Barnard, J. L. (1969) The families and genera of marine gammaridean Amphipoda. Bulletin of the United States National Museum, 271, 1 - 535. http: // dx. doi. org / 10.5479 / si. 03629236.258.1","Thurston, M. H. & Allen, E. (1969) Type material of the families Lysianassidae, Stegocephalidae, Ampeliscidae and Haustoriidae (Crustacea: Amphipoda) in the collections of the British Museum (Natural History). Bulletin of the British Museum (Natural History), Series Zoology, 17, 347 - 388.","Bellan-Santini, D. (1972) Amphipodes provenant des contenus stomacaux de trois especes de poissons Nototheniidae recoltes en Terre Adelie (Antarctique). Tethys, 4, 683 - 702.","Arnaud, P. M. (1974) Contribution a la bionomie marine benthique des regions antarctiques et subantarctiques. Tethys, 6, 465 - 656.","Thurston, M. H. (1974) Crustacea Amphipoda from Graham Land and the Scotia Arc, collected by Operation Tabarin and the Falkland Islands Dependencies Survey, 1944 - 59. British Antarctic Survey Scientific Reports, 85, 1 - 89.","Lowry, J. K. & Bullock, S. (1976) Catalogue of the marine gammaridean Amphipoda of the Southern Ocean. Royal Society of New Zealand Bulletin, 16, 1 - 187.","De Broyer, C. (1983) Recherches sur la systematique et l'evolution des crustaces amphipodes gammarides antarctiques et subantarctiques. PhD Thesis, Universite de Louvain, 468 pp.","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.91","Klages, M. (1991) Biologische und populationsdynamische Untersuchungen an ausgewahlten Gammariden (Crustacea; Amphipoda) des sudostlichen Weddelsmeeres, Antarktis. PhD Thesis, Naturwissenschaften, Universitat Bremen, 240 pp.","De Broyer, C. & Jazdzewski, K. (1993) Contribution to the marine biodiversity inventory. A checklist of the Amphipoda (Crustacea) of the Southern Ocean. Documents de Travail de l'Institut Royal des Sciences Naturelles de Belgique, 73, 1 - 154.","Johnson, W. S., Stevens, M. & Watling, L. (2001) Reproduction and development of marine peracaridans. Advances in Marine Biology, 39, 105 - 260. http: // dx. doi. org / 10.1016 / S 0065 - 2881 (01) 39009 - 0","La Mesa, M., Salu, M. & Vacchi, M. (2004) Trophic ecology of the emerald notothen Trematomus bernacchii (Pisces, Nototheniidae) from Terra Nova Bay, Ross Sea, Antarctica. Polar Biology, 27, 721 - 728. http: // dx. doi. org / 10.1007 / s 00300 - 004 - 0645 - x","De Broyer, C., Lowry, J., Jazdzewski, K. & Robert, H. (2007) Catalogue of the Gammaridean and Corophiidean Amphipoda (Crustacea) of the Southern Ocean with distribution and ecological data. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Biologie, 11 (Supplement 1), 1 - 325","Walker, A. O. (1907) Crustacea III. - Amphipoda. National Antarctic Expedition 1901 - 1904, Natural History, 3, 1 - 38, pls. 31 - 13.","Schellenberg, A. (1926) Die Gammariden der Deutschen Sudpolar-Expedition 1901 - 1903. Deutsche Sudpolar-Expedition, 18, 235 - 414.","Barnard, K. H. (1930) Crustacea. Part XI. - Amphipoda. British Antarctic (\" Terra Nova \") Expedition, 1910, Natural History Reports, Zoology, 8, 307 - 454.","Types. Syntypes, NHM 1903: 10: 15: 13 - 15 (9 specimens in alcohol + 11 slides).","Andres, H. G. (1986) Atylopsis procerus sp. n. und Cheirimedon solidus sp. n. aus der Weddell See sowie Anmerkungen zu Orchomenella pinguides Walker, 1903. (Crustacea: Amphipoda: Gammaridea). Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 83, 117 - 130."]}

Lowry, J. K., Kilgallen, N. M. (2015): Debroyerella gen. nov. and Ulladulla gen. nov., two new lysianassoid genera (Crustacea, Amphipoda, Lysianassoidea). Zootaxa 3920 (1): 153-162, DOI: http://dx.doi.org/10.11646/zootaxa.3920.1.7

Parschisturella simplex Andres, 1983 Parschisturella simplex Andres, 1983: 213, figs 13, 14.— Barnard & Karaman, 1991: 517.— De Broyer & Jażdżewski, 1993: 74.— De Broyer et al., 2007: 165. Types. Holotype, male, 16 mm, ZMH K 32410. Paratype, male 20.3 mm ZMH K 32411. Type-locality. South Georgia, Walther Herwig 1977-78, sta. 492, (55°00’S 35°30’W), 0–120 m depth. Habitat. Marine. Depth range. 0–120 m. Feeding strategies. Not recorded. Remarks. See remarks under Parschisturella martrudan. Distribution. Southern Ocean. South Georgia (Andres 1983)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 61, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Andres, H. G. (1983) Die Gammaridea (Crustacea: Amphipoda) der Deutschen Antarktis-Expeditionen 1975 / 76 und 1977 / 78. 3. Lysianassidae. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 80, 183 - 220.","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","De Broyer, C. & Jazdzewski, K. (1993) Contribution to the marine biodiversity inventory. A checklist of the Amphipoda (Crustacea) of the Southern Ocean. Documents de Travail de l'Institut Royal des Sciences Naturelles de Belgique, 73, 1 - 154.","De Broyer, C., Lowry, J. K., Jazdzewski, K. & Robert, H. (2007) Catalogue of the Gammaridean and Corophiidean Amphipoda (Crusteacea) of the Southern Ocean with distribution and ecological data. In: C. De Broyer (Ed), Census of Antatrctic Marine Life: Synopsis of the Amphipoda of the Southern Ocean. Vol. 1. Bulletin de l'Institut Royal des Sciences Naturelles de Belqigue, Biologie 77, Supplement 1 (1), 1 - 325."]}

Euonyx chelatus Norman, 1867 Euonyx chelatus Norman, 1867: 202.— Robertson, 1888: 94.— Stebbing, 1888: 673.— Walker, 1889: 77.— Sars, 1891: 117, pl. 40 fig. 1.— Walker, 1892: 244.— Walker, 1895a: 294.— Walker, 1895b: 422.— Norman, 1900: 214.— Scott, 1901: 259.— Stebbing, 1906: 19.— Stephensen, 1923: 41.— Stephensen, 1929: 52, figs 14, 16.—H.B. Moore, 1932: 156.— Stephensen, 1932: 353.— Pirlot, 1933: 120 (key).— Stephensen, 1935: 33.— Moore, 1937: 117.— Jones, 1940: 25, table 1.— Stephensen, 1942: 470 (table).— Jones, 1948: 404.— Enequist, 1949: 387 (table).— Gurjanova, 1951: 159, fig. 34. J.L. Barnard, 1958: 91 (list).— Bruce, Colman & Jones, 1963: 150.— Thurston & Allen, 1969: 358.—Vader, 1978: 127.— Lincoln, 1979: 54, fig. 18.—P.G. Moore, 1984: 32.— Comely & Ansell, 1988: 114, 123.— Costello et al., 1989: 33.— Lowry & Stoddart, 1989: 519.— Barnard & Ingram, 1990: 2 (list), 3 (key).— Barnard & Karaman, 1991: 485.— Palerud & Vader, 1991: 35.— Sainte-Marie, 1991: 217, appendix 1.— Holmes et al., 1997: 186 (list).— Johnson et al., 2001: 198, table 3.— O’Reilly et al., 2001: 36.— Tzvetkova & Golikov, 2001: 88 (table). ? Opis leptochela Bate & Westwood, 1868: 501 fig. Types. Syntypes: NHM Reg. no. 1911:11:8:13684-13686 (3 specimens, alcohol), 1911:11:8:M843-M845 (3 slides). Type locality. Sleat Sound, Hebrides, North Atlantic Ocean (~ 57°10’N 5°50’W) on the sea urchin Echinus esculentus Linnaeus, 1758. Habitat. An apparent obligate ectoparasite of the sea urchin Echinus esculentus Linnaeus, 1758 (Vader 1978). Depth range. 31–900 m (H.B. Moore 1937; Stephensen 1923). Remarks. There are currently only three recognized species in Euonyx —the type species and the two new species described here. Euonyx chelatus and E. urania show some similarity. Euonyx xarifa is the least similar. It has an apically rounded lateral cephalic lobe (apically acute or subacute in E. chelatus and E. urania); no anterodistal lobe on article 1 of the antenna 1 peduncle (present in E. chelatus and E. urania); mandibular incisor vestigial (reduced in E. chelatus and E. urania); mandibular molar a large flap (absent in E. chelatus and E. urania); lacinia mobilis absent (vestigial in E. chelatus and E. urania); epimeron 3 with a rounded posteroventral corner (forming a spine spine in E. chelatus and E. urania); and the dorsal margin of urosomite 1 forming a rounded boss extending over urosomite 2 (an elongate truncated boss in E. chelatus and E. urania). Distribution. Northeast Atlantic Ocean. Coasts of Scotland (Norman 1967; Robertson 1888; Scott, 1901); Isle of Man (Bate & Westwood 1868 (as Opis leptochela); H.B. Moore 1937); Norway (Sars 1891); Wales (Walker 1892); England (Walker 1895 a, 1895b); southwest of the Faeroe Islands (Stephensen 1923); west coast of Ireland (Costello et al. 1989); Bay of Biscay (Dauvin & Sorbe 1995). Arctic Ocean. Barents Sea (Sars 1891; Tzvetkova & Golokov 2001).? Northwest Atlantic Ocean. Westof Greenland (determination uncertain) (Stephensen 1923)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 21, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Norman, A. M. (1867) Report of the committee appointed for the purpose of exploring the coasts of the Hebrides by means of the dredge. Part II. On the Crustacea, Echinodermata, Polyzoa, Actinozoa, and Hydrozoa. Report of the British Association for the Advancement of Science, 36, 193 - 206.","Robertson, D. (1888) A contribution towards a catalogue of the Amphipoda and Isopoda of the Firth of Clyde. Transactions of the Natural History Society of Glasgow, 2, 9 - 99.","Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology, 29, 1 - 1737, pls. 1731 - 1210.","Walker, A. O. (1889) Third report on the higher Crustacea of the L. M. B. C. district. Liverpool Marine Biological Committee Reports, 2, 195 - 213, pls. 10, 11.","Sars, G. O. (1891) An Account of the Crustacea of Norway, with Short Descriptions and Figures of all the Species. Vol. I. Amphipoda. Parts 4 - 9. Alb. Cammermeyer, Christiana, 144 pp., 48 pls. [pp. 69 - 212, pls. 225 - 272]","Walker, A. O. (1892) Report on the higher Crustacea of Liverpool Bay taken in 1889. Liverpool Marine Biological Committee Reports, 3, 239 - 251, pl. 215.","Walker, A. O. (1895 a) Revision of the Amphipoda of the L. M. B. C. district. Proceedings and Transactions of the Liverpool Biological Society, 9, 287 - 320, pls. 18, 19.","Walker, A. O. (1895 b) Revision of the Amphipoda of the L. M. B. C. district. Liverpool Marine Biological Committee Reports, 4, 415 - 448, pls. 418, 419.","Norman, A. M. (1900) British Amphipoda: Fam. Lysianassidae (concluded). Annals and Magazine of Natural History, Series 7, 5, 196 - 214, pls. 196. http: // dx. doi. org / 10.1080 / 00222930008678268","Scott, T. (1901) Notes on gatherings of Crustacea, collected for the most part by the steam trawler \" St. Andrew \" of Aberdeen, and examined during the year 1900. Annual Report of the Fishery Board for Scotland, Part III. Scientific Investigations, 19, 235 - 281, pl. 217.","Stebbing, T. R. R. (1906) Amphipoda. I. Gammaridea. Das Tierreich, 21, 1 - 806.","Stephensen, K. (1923) Crustacea Malacostraca, V: (Amphipoda, I). Danish Ingolf-Expedition, 3, 1 - 100.","Stephensen, K. (1929) Amphipoda. Die Tierwelt der Nord- und Ostsee, 14, 1 - 188.","Moore, H. B. (1932) Faunistic records for the Manx region. Annual Report of the Marine Biological Station at Port Erin, Isle of Man, 45, 152 - 159.","Stephensen, K. (1932) The Tanaidacea and Amphipoda of the Arctic. Fauna Arctica, 6, 343 - 378.","Pirlot, J. M. (1933) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II: - Les amphipodes de la mer profonde. 1. (Lysianassidae, Stegocephalidae, Stenothoidae, Pleustidae, Lepechinellidae). Siboga- Expeditie, Monographie, 33 c, 114 - 167.","Stephensen, K. (1935) The Amphipoda of N. Norway and Spitsbergen with adjacent waters. Tromso Museums Skrifter, 3, 1 - 140.","Moore, H. B. (1937) Marine Fauna of the Isle of Man. Transactions of the Liverpool Biological Society, 50, 1 - 293.","Jones, N. S. (1940) The distribution of the fauna and bottom deposits off Port Erin. Proceedings of the Liverpool Biological Society, 53, 1 - 34.","Stephensen, K. (1942) The Amphipoda of N. Norway and Spitsbergen with adjacent waters. Tromso Museums Skrifter, 3, 363 - 526.","Jones, N. S. (1948) The ecology of the Amphipoda of the south of the Isle of Man. Journal of the Marine Biological Association of the United Kingdom, 27 (2), 400 - 439. http: // dx. doi. org / 10.1017 / s 0025315400025455","Enequist, P. (1949) Studies on the soft-bottom amphipods of the Skagerak. Zoologiska Bidrag fran Uppsala, 28, 297 - 492.","Gurjanova, E. F. (1951) Amphipods of the seas of the USSR and surrounding waters (Amphipoda-Gammaridea). Akademiya Nauk SSSR, Opredeliteli po Faune SSSR, 41, 1 - 1029.","Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.","Bruce, J. R., Colman, J. S. & Jones, N. S. (1963) Marine Fauna of the Isle of Man and its surrounding seas. Liverpool University Press, Liverpool, pp. 1 - 307. [not seen]","Thurston, M. H. & Allen, E. (1969) Type material of the families Lysianassidae, Stegocephalidae, Ampeliscidae and Haustoriidae (Crustacea: Amphipoda) in the collections of the British Museum (Natural History). Bulletin of the British Museum (Natural History), Series Zoology, 17, 347 - 388.","Lincoln, R. J. (1979) British Marine Amphipoda: Gammaridea. British Museum (Natural History), London, v + 658 pp.","Moore, P. G. (1984) The fauna of the Clyde Sea area. Crustacea: Amphipoda. University Marine Biological Station Millport, Occasional Publication, 2, 1 - 84.","Comely, C. A. & Ansell, A. D. (1988) Invertebrate associates of the sea urchin, Echinus esculentus L., from the Scottish west coast. Ophelia, 28, 111 - 137. http: // dx. doi. org / 10.1080 / 00785326.1988.10430807","Costello, M. J., Holmes, J. M. C., McGrath, D. & Myers, A. A. (1989) A review and catalogue of the Amphipoda (Crustacea) in Ireland. Irish Fisheries Investigations, Series B (Marine), 33, 1 - 70.","Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Palerud, R. & Vader, W. (1991) Marine Amphipoda Gammaridea in north-east Atlantic and Norwegian Arctic. Tromura, Naturvitenskap, 68, 1 - 97.","Sainte-Marie, B. (1991) A review of the reproductive bionomics of aquatic gammaridean amphipods: variation of life history traits with latitude, depth, salinity and superfamily. Hydrobiologia, 223, 189 - 227. http: // dx. doi. org / 10.1007 / bf 00047641","Holmes, J. M. C., Costello, M. J. & Connor, D. W. (1997) Crustacea. In: Howson, C. M. & Picton, B. E. (Eds.), The species directory of the marine fauna and flora of the British Isles and surrounding seas. Ulster Museum Publication, Ulster Museum, Belfast, pp. 142 - 209.","Johnson, W. S., Stevens, M. & Watling, L. (2001) Reproduction and development of marine peracaridans. Advances in Marine Biology, 39, 105 - 260. http: // dx. doi. org / 10.1016 / s 0065 - 2881 (01) 39009 - 0","O'Reilly, M., Hamilton, E. & Heaney, L. (2001) New records of amphipods and leptostracans from the Forth Sea area, with notes on their copepod parasites (Siphonostomatidae: Nicothoidae). Glasgow Naturalist, 23, 35 - 42.","Tzvetkova, N. L. & Golikov, A. A. (2001) Suborder Gammaridea Dana, 1852. Explorations of the Fauna of the Seas, 51, 79 - 94.","Bate, C. S. & Westwood, J. O. (1868) A History of the British Sessile-eyed Crustacea. John Van Voorst, London, 536 pp.","Linnaeus, C. (1758) Systema naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. 10 th Edition. Laurentius Salvius, Stockholm, 824 pp. [in Latin] http: // dx. doi. org / 10.5962 / bhl. title. 542"]}

Stephonyx arabiensis Diffenthal & Horton, 2007 (Figs 40–41) Stephonyx arabiensis Diffenthal & Horton, 2007: 33, figs 1–4.— Narahara et al., 2012: 1505 (key).— Corrigan et al., 2013: fig. 5. Types. Holotype female, 26.7 mm, NHM 2007.799. Paratypes: male, 24.9 mm, NHM 2007.800; 6 large mature females, NHM 2007.801–806; 31 males, NHM 2007.807–816; 14 immature females, NHM 2007.817–826; 14 juveniles, NHM 2007.827–836. Type locality. Off the coast of Pakistan in the northern Arabian Sea (22º51.067'N 65º59.916'E), 1864 m depth, mean bottom temperature = 3.53ºC. Material examined. New South Wales. 1 specimen, AM P.96589, northeast of Coffs Harbour (30º10.88’S 153º32.22’E), 1000 m, baited trap, 12–13 August 1993, P.B Berents & R. T. Springthorpe, MV Cheryl Lee [NSW-877]; 2 specimens, AM P.96590, off Wollongong (34º32.4’S 151º22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-972]; 4 specimens, AM P.96591, off Wollongong (34º32.4’S 151º22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-971]; 7 specimens, AM P.96592, off Wollongong (34º32.4’S 151º22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-973]; 7 juveniles, AM P.48101, north-east of Coffs Harbour (30°10.93’S 153°32.26’E), 963 m, baited trap, 11–12 August 1993, P.B. Berents, R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-862]; 2 specimens, AM P.52661; 2 specimens, AM P.49815, north-east of Coffs Harbour (30°10.88’S 153°32.22’E), 1000 m, baited trap, 12–13 August 1993, P.B. Berents, R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-876]; 1 specimen, AM P.43430, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, muddy sand, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-953]; 9 specimens, AM P.43496, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, Globigerina ooze, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-954]; 3 specimens, AM P.43446, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-971]; 15 specimens, AM P.43372, north-east of Coffs Harbour (30°10.93’S 153°32.26’E), 1000 m, baited trap, Globigerina ooze, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-1000]; 1 specimen, AM P.50071, north-east of Coffs Harbour (30°10.93’S 153°32.26’E), 1000 m, baited trap, 9–10 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Anne [NSW-1021]; 6 specimens, AM P.50080, north-east of Coffs Harbour (30°10.93’S 153°32.26’E), 1000 m, baited trap, 9–10 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-1022]. Queensland. Male 22.7 mm, AM P.96587, 2 specimens, 8.1–12.5 mm, AM P.96588, east of Flynn Reef, Queensland, Australia (16º37.82’S 146º23.08’E), 1000 m, baited trap, 6–7 June 1993, J.K. Lowry & P. Freewater, RV Sunbird [QLD-931]; 30 specimens, AM P.96593, off Flynn Reef (16º37’S 146º23’E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry & P. Freewater, RV Sunbird [QLD-950]; 6 specimens, AM P.50235, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 6–7 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-931/ SEAS]; 6 specimens, AM P.50244; 4 specimens, AM P.57607, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 6–7 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-932/ SEAS]; 11 specimens, AM P.50297; 3 specimens, AM P.57614, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-949/ SEAS]; 3 specimens, AM P.58069, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-950/ SEAS]; 2 specimens, AM P.57611; 2 specimens, AM P.49520, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-948/ SEAS]; 6 specimens, AM P.47889, due east of Mooloolaba (26°36.23’S 153°50.23’E), 1006 m, baited trap, 2–3 August 1994, J.K. Lowry & K. Dempsey, MV Capricorn I [QLD-1140]. Tasmania. Many specimens, AM P.73709, Hill V, south-southeast of South East Cape (44°23.6’S 147°10.7’E), 1400 m, baited trap, 30 January 1997, CSIRO party on FRV Southern Surveyor, [SS01/97/61]. Description. Based on male, 22.7 mm, AM P.96587. Head, lateral cephalic lobe subtriangular, apically subacute. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, 8- articulate, terminal article not offset; primary flagellum with strong 2-field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae present; calceoli present. Labrum, epistome and upper lip separate, with weak suture; epistome broadly rounded; upper lip produced, subacute apically. Mandible molar setose with vestigial triturating surface; palp attached about midway, article 2 not strongly broadened distally, article 3 blade-like. Maxilla 1 outer plate setal-tooth 7 present, cuspidate along most of straight inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with 9 apical robust setae. Gnathopod 1 chelate; coxa reduced, significantly shorter than coxa 2, subquadrate; basis moderately setose along anterior margin, or sparsely setose along anterior margin; ischium very long (length 4 × to 6 × breadth); carpus very long (length more than 4 × breadth), subequal in length to propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, slightly concave; dactylus simple. Gnathopod 2 propodus palm transverse, slightly concave. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner subquadrate, producing minute spine. Urosomite 1 not projecting over urosomite 2, with anterodorsal notch and slightly rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with strong plumose setae on both rami. Telson deeply cleft, with 1 apical robust setae on each lobe. Habitat. Marine. Feeding strategies. Scavenger (Diffenthal & Horton 2007). Depth range. 963 – 1864 m. Remarks. Our material agrees very well with the description of Diffenthal & Horton (2007). This is the first record of S. arabiensis outside the type locality in the Arabian Sea. This remarkable range extension from the north-western Indian Ocean into the South Pacific Ocean indicates a wide range for the species. There is no other species of Stephonyx known from this vast area except for the S. biscayensis of J.L. Barnard (1961) and Ledoyer (1986) from Kenya and Madagascar, which appears to be an undescribed species (see remarks under S. biscayensis). Distribution. Australia. Off the east coast from Flynn Reef, Queensland, to South East Cape, Tasmania (this study). Pakistan. Northern Arabian Sea (Diffenthal & Horton 2007).

Nagada uwedoae Lowry & Stoddart, 1995 Nagada uwedoae Lowry & Stoddart, 1995: 154, figs 34–36. –– Lowry & Stoddart, 2003: 283 (catalogue).— Lowry & Stoddart, 2009: 914, figs 5, 6. Types. Holotype, female, 3.6 mm, AM P.41605. Paratypes: 108 specimens, AM P.41606; 79 specimens, AM P.41609; 60 specimens, USNM 274112; 33 specimens, BMNH 1995.592.624; 1 make, AM P.41607; 288 specimens, AM P.41608. Type locality. Face of outer barrier between Dam Awan (Rasch Passage) and Wongad, Astrolabe Bay, Papua New Guinea (5°08.59’S 145°49.65’E), 290 m depth. Additional material examined. New South Wales. 4 specimens, AM P.50752, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 100 m, baited trap, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-985]; 3 specimens, AM P.50750, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 100 m, Globigerina ooze, baited trap, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-984]; 2 specimens, AM P.51132, north-east of Coffs Harbour (30°14.63'S 153°27.68'E), 199 m, baited trap, 12–13 August 1993, P.B. Berents, R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-882]; 1 female, AM P.69473, Wattamolla, off Providential Head (34°08'S 151°08.5'E), 59 m, baited trap, 14–15 January 1991, S.J. Keable, A. R. Parker & J.K. Lowry, MV Krista [PIO-110]. Tasmania. 10 specimens, AM P.58313; 6 specimens, AM P.51099, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-357]; 19 specimens, AM P.51104; 16 specimens, AM P.58317, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-376 & TAS-374]; 1 specimen, AM P.51100; 10 specimens, AM P.51101, east of Fortescue Bay (43°09.37’S 148°13.6’E), 300 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-359 & TAS-361]; 7 specimens, AM P.51092, east of Fortescue Bay (43°09.37’S 148°13.6’E), 300 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-395]; 2 specimens, AM P.51105, east of Fortescue Bay (43°07.37’S 148°13.75’E), 400 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-380]; 1 specimen, AM P.57716, east of Fortescue Bay (43°08.97'S 148°15.37'E), 1000 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-421]; 3 specimens, AM P.51103; 13 specimens, AM P.51102, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7'S 148°03.45'E), 100 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-372 & TAS-371]. Habitat. Marine soft bottoms. Depth range. 59–1000 m (this study). Feeding strategies. Ascavenger taken in baited traps. Distribution. Papua New Guinea. Madang Lagoon and Astrolabe Bay (Lowry & Stoddart 1995). Australia. East coast from Queensland to Tasmania (Lowry & Stoddart 2009, this study)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 44-45, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.","Lowry, J. K. & Stoddart, H. E. (2009) Lysianassidae. In: Lowry, J. K. & Myers, A. A. (Eds.), Benthic Amphipoda (Crustacea: Peracarida) of the Great Barrier Reef, Australia. Zootaxa, 2260, 561 - 597."]}

Stephonyx laqueus (J.L. Barnard, 1967) Euonyx laqueus J.L. Barnard, 1967: 55, figs 23, 24.— Sekiguchi & Yamaguchi, 1983: 7, fig. 4.— Barnard & Ingram, 1990 (key).— Barnard & Karaman, 1991: 485.— Boudrias, 1991: 13. Stephonyx laqueus.— Lowry & Stoddart, 1989: 521.— France, 1994: 71.— Diffenthal & Horton, 2007: 40 (key).— Senna & Serejo, 2007: 13 (key).— Narahara et al., 2012: 1493, 1505 (key), figs 1, 12–14. Stephonyx c.f. laqueus.— Kaufman, 1994: 56, 63, fig. 10A, B, tables 1, 2. Types. Holotype, male, 19 mm, LACM CR 1961 - 101.1. Type locality. 8.5 miles west of San Benitos Islands, Baja California, Mexico (28°20'N 115°45'W), 1187 m. Additional material. 26 specimens, LACM CR 1961 - 101.2. from the type locality. Habitat. Marine. Depth range. 330–1850 m (Sekiguchi & Yamaguchi 1983; Kaufman 1994). Feeding strategies. Scavenger, collected in baited traps. Distribution. Eastern Pacific Ocean. West coast of Baja California, Mexico (J.L. Barnard 1967; France 1994; Kaufman 1994). Western Pacific Ocean and Sea of Okhotsk. Coasts of Japan (Sekiguchi & Yamaguchi 1983; Narahara et al. 2012)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 67, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Barnard, J. L. (1967) Bathyal and abyssal gammaridean Amphipoda of Cedros Trench, Baja California. Bulletin of the United States National Museum, 260, 1 - 205. http: // dx. doi. org / 10.5479 / si. 03629236.260.1","Sekiguchi, H. & Yamaguchi, Y. (1983) Scavenging gammaridean amphipods from the deep-sea floor. Bulletin of the Faculty of Fisheries, Mie University, 10, 1 - 14.","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Boudrias, M. A. (1991) Methods for the study of amphipod swimming: behavior, morphology, and fluid dynamics. In: Watling, G. (Ed.), Proceedings of the VIIth International Colloquium on Amphipoda held in Walpole, Maine, USA, 14 - 16 September 1990 Hydrobiologia, 223, pp. 11 - 25.","Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","France, S. C. (1994) Genetic population structure and gene flow among deep-sea amphipods, Abyssorchomene spp., from six California Continental Borderland basins. Marine Biology, 118, 67 - 77. http: // dx. doi. org / 10.1007 / bf 00699220","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598","Kaufman, R. S. (1994) Structure and function of chemoreceptors in scavenging lysianassoid amphipods. Journal of Crustacean Biology, 14 (1), 54 - 71. http: // dx. doi. org / 10.1163 / 193724094 x 00470"]}

Euonyx xarifa sp. nov. (Figs 13–15) Types. Holotype, female, 10.7 mm, AM P.68882, east of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m, epibenthic sled, 22 August 1988, P.A. Hutchings et al., RV Franklin [FR0688-14]. Paratype, male, 8.5mm, AM P.68883, same collection details as holotype. Type locality. East of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m east of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m. Etymology. Named for the pearling lugger ‘Xarifa’ one of the fleet wrecked off Cape York (probably Thursday Island) during the severe cyclone Mahine on 4 March 1899; used as a noun in apposition. Description. Based on holotype, female, 10.7 mm, AM P.68882. Head lateral cephalic lobes small, rounded; eyes apparently absent. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 4-articulate, terminal article large, offset; primary flagellum with strong 2-field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae absent; flagellum short; calceoli absent. Labrum, epistome and upper lip separate. Mandible incisor very reduced, left and right slightly asymmetrical; molar an asetose flap; palp attached distally, article 2 with central bulge. Maxilla 1 outer plate setal-tooth 7 present, not cuspidate; palp distal margin with apical robust setae. Maxilliped outer plate without apical robust setae. Gnathopod 1 chelate; coxa vestigial, significantly shorter than coxa 2, subquadrate; basis sparsely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), longer than propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, slightly convex; dactylus simple. Gnathopod 2 propodus palm slightly acute. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin weakly or not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner subquadrate. Urosomite 1 not projecting over urosomite 2, with rounded boss. Uropod 2 inner ramus without constriction. Peduncle without dorsolateral flange; outer ramus article 2 short, without plumose setae on rami. Telson deeply cleft, or moderately cleft. Depth range. 1770–1863 m. Remarks. See remarks under E. chelatus. Distribution. Australia. Queensland., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 25-28, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734

Stephonyx carinatus Bellan-Santini, 1997 Stephonyx carinatus Bellan-Santini, 1997: 13, figs 7, 8.— Ortiz et al., 2007: 516.— Diffenthal & Horton, 2007: 39 (key).— Senna & Serejo, 2007: 13 (key).— Narahara et al., 2012: 1505 (key). Types. Holotype, 7 mm, MNHN-Am 4903. Type locality. Barbados Trench, North Atlantic Ocean (10°19.97’N 58°37.30’W), 1947 m depth. Habitat. Marine, cold seeps. Depth range. 1947 m (Bellan-Santini 1997). Distribution. North Atlantic Ocean. Barbados trench (Bellan-Santini 1997)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 67, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Bellan-Santini, D. (1997) Amphipods of the cold seep community on the South Barbados Accretionary Prism. Crustaceana, 70, 1 - 30. http: // dx. doi. org / 10.1163 / 156854097 x 00311","Ortiz, M., Martin, A. & Diaz, Y. J. (2007) Lista y referencias de los crustaceos anfipodos (Amphipoda: Gammaridea) del Atlantico occidental tropical. Revista de Biologia Tropical, 55 (2), 479 - 528. http: // dx. doi. org / 10.15517 / rbt. v 55 i 2.6026","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Nagada uwedoae Lowry & Stoddart, 1995 Nagada uwedoae Lowry & Stoddart, 1995: 154, figs 34–36. –– Lowry & Stoddart, 2003: 283 (catalogue).— Lowry & Stoddart, 2009: 914, figs 5, 6. Types. Holotype, female, 3.6 mm, AM P.41605. Paratypes: 108 specimens, AM P.41606; 79 specimens, AM P.41609; 60 specimens, USNM 274112; 33 specimens, BMNH 1995.592.624; 1 make, AM P.41607; 288 specimens, AM P.41608. Type locality. Face of outer barrier between Dam Awan (Rasch Passage) and Wongad, Astrolabe Bay, Papua New Guinea (5°08.59’S 145°49.65’E), 290 m depth. Additional material examined. New South Wales. 4 specimens, AM P.50752, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 100 m, baited trap, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-985]; 3 specimens, AM P.50750, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 100 m, Globigerina ooze, baited trap, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-984]; 2 specimens, AM P.51132, north-east of Coffs Harbour (30°14.63'S 153°27.68'E), 199 m, baited trap, 12–13 August 1993, P.B. Berents, R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-882]; 1 female, AM P.69473, Wattamolla, off Providential Head (34°08'S 151°08.5'E), 59 m, baited trap, 14–15 January 1991, S.J. Keable, A. R. Parker & J.K. Lowry, MV Krista [PIO-110]. Tasmania. 10 specimens, AM P.58313; 6 specimens, AM P.51099, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-357]; 19 specimens, AM P.51104; 16 specimens, AM P.58317, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-376 & TAS-374]; 1 specimen, AM P.51100; 10 specimens, AM P.51101, east of Fortescue Bay (43°09.37’S 148°13.6’E), 300 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-359 & TAS-361]; 7 specimens, AM P.51092, east of Fortescue Bay (43°09.37’S 148°13.6’E), 300 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-395]; 2 specimens, AM P.51105, east of Fortescue Bay (43°07.37’S 148°13.75’E), 400 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-380]; 1 specimen, AM P.57716, east of Fortescue Bay (43°08.97'S 148°15.37'E), 1000 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-421]; 3 specimens, AM P.51103; 13 specimens, AM P.51102, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7'S 148°03.45'E), 100 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-372 & TAS-371]. Habitat. Marine soft bottoms. Depth range. 59–1000 m (this study). Feeding strategies. Ascavenger taken in baited traps. Distribution. Papua New Guinea. Madang Lagoon and Astrolabe Bay (Lowry & Stoddart 1995). Australia. East coast from Queensland to Tasmania (Lowry & Stoddart 2009, this study).

Parschisturella pilot sp. nov. (Figs 36–38) Types. Holotype, female, 12.0 mm, AM P.69452, north side of Cape Sorell, about 400 m outside Hannants Bight on a line toward large bluff of Ocean Beach, Tasmania, Australia (42°11.4’S 145°11.08'E), 30 m, sand, baited trap, 26 April 1991 – 27 April 1991, J.K. Lowry & S.J. Keable, Flying Scud [TAS-279]. Paratypes: 59 specimens, 7.5–12.4 mm, AM P.69451; 1 male, 12.1 mm, AM P.69453; 1 male, 9.2 mm, AM P.69454, same collection details as holotype. Type locality. North side of Cape Sorell, about 400 m outside Hannants Bight on a line toward large bluff of Ocean Beach, Tasmania, Australia (42°11.4’S 145°11.08'E), 30 m depth. Etymology. Named for the Macquarie Harbour pilot boat that put out on 23 July 1830 to guide the Government brig Tamar through the difficult harbour entrance known as 'Hells Gates'. When about half-way to the brig conditions deteriorated into a south-westerly gale and the pilot boat, with its nine crew, disappeared. Additional material examined. New South Wales. 2 specimens, AM P.44241; 4 specimens, AM P.44252, off Wollongong (34°31.48’S 151°13.22’E), 200 m, Globigerina ooze, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-962, NSW-964]; 2 specimens, AM P.44265, off Wollongong (34°31.48’S 151°13.22’E), 200 m, 95.9% sand, 4.9% mud, baited trap, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-944]; 10 specimens, AM P.51107; 6 specimens, AM P.46906, off Wollongong (34°32.02’S 151°13.0’E), 200 m, baited trap, 6–7 May 1993, P. Freewater & party, MV Robin E [NSW-780, NSW-781]; 2 specimens, AM P.47020; 22 specimens, AM P.47034; 10 specimens, AM P.48186, off Wollongong (34°32.08’S 151°12.55’E), 200 m, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-797, NSW-798]; 10 specimens, AM P.44428; 1 specimens, AM P.44439, off Wollongong (34°32.38’S 151°15.0’E), 300 m, Globigerina ooze, baited trap, 7–8 May 1993, P. Freewater, S.J. Keable & W. Vader, MV Robin E [NSW-801, NSW-802]; 1 specimen, AM P.44455, off Wollongong (34°32.25’S 151°15.17’E), 300 m, Globigerina ooze, baited trap, 6–7 May 1993, P. Freewater & party, MV Robin E [NSW-783]; 3 specimens, AM P.48395, off Wollongong (34°26.42’S 150°58.03’E), 50 m, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-792]; 26 specimens, AM P.48196, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 100 m, baited trap, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-984]; 17 specimens, AM P.48423; 1 specimen, AM P.48411, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 100 m, baited trap, 9–10 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-1006, NSW-1007]; 14 specimens, AM P.55967, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 92.7 m, baited trap, 11–12 August 1993, P.B. Berents & R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-870]; 85 specimens, AM P.55978; 3 specimens, AM P.57648; 2 specimens, AM P.69459; 5 specimens, AM P.52649, north-east of Coffs Harbour (30°15.75’S 153°21.98’E), 98 m, baited trap, 12–13 August 1993, P.B. Berents & R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-885–NSW-887]; 55 specimens, AM P.58467, north-east of Coffs Harbour (30°14.63’S 153°27.68’E), 199 m, baited trap, 12–13 August 1993, P.B. Berents & R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-884]; 1 specimen, AM P.69458, east of Long Reef (33°43'S 151°46'E to 33°44'S 151°46'E), 174 m, epibenthic sled, 20 December 1985, J.K. Lowry & R. T. Springthorpe, FRV Kapala [K85-21-08]. Queensland. many specimens, AM P.69460, east of Fitzroy Reef (23°26.16’S 152°28.46’E), 400 m, baited trap, 16–17 June 1993, J.K. Lowry, P. Freewater & R. T. Springthorpe, MV Reefknot [QLD-963/ SEAS]. Tasmania. 1 specimen, AM P.50826, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’ S 148°03.45’E), 100 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-354]; 1 specimen, AM P.51321, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’ S 148°03.45’E), 100 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-409]; many specimens, AM P.69455, north side of Cape Sorell, about 80 m outside Hannants Bight (42°11.5’S 145°11.0’E), 18 m, sand and detritus, baited trap, 26–27 April 1991, J.K. Lowry & S.J. Keable, Flying Scud [TAS-277]; 2 specimens, AM P.69456, D'Entrecasteaux Channel, north end of Tower Bay, 400 m off small shingle beach (43°23.6’S 147°02.4’E), 40 m, baited trap, 20–21 April 1991, J.K. Lowry & S.J. Keable, Flying Scud [TAS-222]; 1 specimen, AM P.69457, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-390]. Description. Based on holotype, female, 12.0 mm, AM P.69452. Head, lateral cephalic lobes small, subtriangular, apically subacute. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, terminal article not offset; primary flagellum with strong 2-field callynophore; robust setae absent from proximal articles; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged; flagellum short; calceoli absent. Labrum, epistome and upper lip separate; epistome less produced than upper lip, straight; upper lip produced, acute apically. Mandible incisor large, left and right symmetrical; molar with asymmetrically reduced column, proximally setose, distally triturating; article 2 margins subparallel. Maxilla 1 outer plate setaltooth 7 present, left and right symmetrical, cuspidate distally along inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with 5 long apical robust setae, medial margins crenulated. Gnathopod 1 weakly subchelate; coxa large, about as long as coxa 2, distally subovate; basis densely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), longer than propodus, without posterior lobe; propodus margins subparallel, palm slightly to moderately acute, entire, straight; dactylus simple, with large subapical spine. Gnathopod 2 propodus palm slightly obtuse; dactylus fitting palm. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis about as long as broad or longer than broad, posterior margin weakly serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner acutely produced, with tiny basal notch and weak spine. Urosomite 1 not projecting over urosomite 2, with rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with plumose setae on both rami. Telson deeply cleft, without dorsal robust setae, with 2–3 apical robust setae on each lobe. Depth range. 18–400 m. Remarks. See remarks under Parschisturella medora. Distribution. Australia. New South Wales: north-east of Coffs Harbour; east of Long Reef; off Wollongong. Queensland: east of Fitzroy Reef. Tasmania: east of Fortescue Bay; D'Entrecasteaux Channel; north of Hippolyte Rocks; north side of Cape Sorell., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 57-61, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734

Euonyx urania sp. nov. (Figs 10–12) Types. Holotype, female, 19.0 mm, AM P.68881, east of Broken Bay, New South Wales, Australia (33°35.0’S 152°05.0’E to 37°37.0’S 152°05.0’E), 1144 m, dredge 10 December 1980, FRV Kapala [K80-20-10]. Type locality. East of Broken Bay, New South Wales, Australia (33°35.0’S 152°05.0’E to 37°37.0’S 152°05.0’E), 1144 m depth. Etymology. Named for the sailing vessel Urania lost off the central New South Wales coast in December 1876; used as a noun in apposition. Description. Based on holotype, female, 19.0 mm. Head, lateral cephalic lobe subtriangular, apically acute and slightly upturned; eyes apparently absent. Antenna 1 peduncular article 1 with well-developed anterodistally rounded lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 6-articulate, terminal article not offset; primary flagellum with strong 2-field callynophore; robust setae present on proximal articles; calceoli absent. Antenna 2 peduncle articles 3 to 5 not enlarged, brush setae absent; flagellum long; calceoli absent. Labrum, epistome and upper lip separate; epistome less produced than upper lip, slightly concave; upper lip produced, downward-pointing and acute apically. Mandible incisor small, left and right slightly asymmetrical; molar absent; palp attached about midway, article 2 with central bulge. Maxilla 1 outer plate setal-tooth 7 present, not cuspidate; palp distal margin with apical robust setae. Maxilla 2 inner plate significantly shorter than outer plate. Maxilliped outer plate apical robust setae absent (with 3 subapical robust setae along inner margin). Gnathopod 1 chelate; coxa vestigial, significantly shorter than coxa 2, subquadrate; basis sparsely setose along anterior margin; ischium very long (length 4 × to 6 × breadth); carpus very long (length more than 4 × breadth), longer than propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, straight; dactylus simple. Gnathopod 2 propodus palm slightly acute. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin weakly or not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner forming, weak spine. Urosomite 1 not projecting over urosomite 2, with a weakly produced, broadly truncated boss. Uropod 2 inner ramus without constriction. Peduncle without dorsolateral flange; outer ramus article 2 short, without plumose setae on rami. Telson deeply cleft. Sexually dimorphic characters. Unknown. Depth range. 1144 m. Remarks. See remarks under E. chelatus. Distribution. Australia. New South Wales., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 22-25, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734

Abyssorchomene gerulicorbis (Shulenberger & Barnard, 1976) comb. nov. Orchomene affinis.— Birstein & Vinogradov, 1955: 223, fig. 9. Orchomene gerulicorbis Shulenberger & Barnard, 1976: 243, figs 1–3.—Thurston, 1979: 56 (biology).— Barnard & Ingram, 1990: 21.— Barnard & Karaman, 1991: 508. Orchomenella (Orchomenopsis) gerulicorbis.— Palerud & Vader, 1991: 41.— Jones, Collins, Bagley, Addison & Priede (1998): 1124, table 2 (ecology). Orchomenella gerulicorbis.— Thurston, 1990: 262 Table 3, 264 Table 5, etc. (ecology).—Lowry Stoddart, 1994: 181.— Lowry & Stoddart 2003: 169.— Jamieson, Kilgallen, Rowden, Fujii, Lörz, Kitazawa & Priede, 2011: 53, 55, table 3, 58, table 6 (ecology).—Duffy, Horton & Billet, 2012: 4865, table 3 (ecology).— Corrigan, Horton, Fotherby, White & Hoelzel, 2013: 6 (molecular).— Cousins, Horton, Wigham & Bagley, 2013: 303, table 3 (ecology). Types. Holotype, female, 13. 9 mm, USNM 149204. Type locality. 440 miles north of Oahu, Hawaii, (28°00'00"N 155°00'00"W), 5720 m, water temperature, 1.2°C, bottom smooth red mud with Manganese nodules. Australian material examined. Queensland: 22 specimens, AM P.49519; 4 specimens, AM P.49523; 261 specimens, AM P.50232; 270 specimens, AM P.50239; 21 specimens, AM P.50295; 14 specimens, AM P.57597; 3 specimens, AM P.57601; 10 specimens, AM P.57603; 5 specimens, AM P.57610; 2 specimens, AM P.57613; 1 female, AM P.71842; 14 specimens, AM P.71843, east of Flynn Reef, Queensland, Australia (16°37.82'S 146°23.08'E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-930–QLD932 & QLD-948–QLD-950/ SEAS]. Tasmania. 20 specimens, AM P.73704, Hill D 1, south-southeast of South East Cape (44°23.4'S 147°16.2'E), 1942 m, baited trap, 31 January 1997, CSIRO party on FRV Southern Surveyor, FRV Southern Surveyor [SS01 /97/ 65]. Extralimital material examined: 8 specimens, AM P.40544, San Clemente Basin, California, United States of America (32°29.8'N 117°59.0'W), 1860 m, 05 November 1987, S.C. France, RV Robert Gordon Sproul [114]; 22 specimens, AM P.42143, off Rapa, Austral Isles, French Polynesia, (27°35.3' S 144°15.5'W), 870 m, baited trap, 17 August 1991, J.K. Lowry & J.M. Poupin, RV Marara [FRP-55]; 48 specimens, AM P.42144; 4 specimens, AM P.42145, off Rapa, Austral Isles, French Polynesia, (27°35.5' S 144°15.8'W), 750 m, baited trap, 18 August 1991, J.K. Lowry & J.M. Poupin, RV Marara [FRP-64 & FRP-66]. Diagnostic description. Mandible molar setose with a triturating surface. Maxilla 2 inner plate slightly shorter than outer plate. Gnathopod 1 subchelate; coxa 1 large, about as long as coxa 2, subrectangular, anterior margin nearly straight; ischium not enlarged; propodus margins subparallel; palm transverse, slightly convex. Gnathopod 2 chelate; palm obtuse, margin excavate; dactylus with ‘setal basket’ on posterodistal margin. Pereopod 7 basis tapering distally. Epimeron 3 posteroventral corner narrowly rounded . Telson moderately cleft. Remarks. Abyssorchomene gerulicorbis has a subrectangular first coxa with a nearly straight anterior margin similar to A. abyssorum and A. charcoti. Abyssorchomene gerulicorbis and A. abyssorum have subchelate first gnathopods (parachelate in A. charcoti). It is difficult to separate A. gerulicorbis from A. abyssorum and A. scotianensis. Abyssorchomene gerulicorbis and A. abyssorum both have subrectangular first coxae (subtly adzeshaped in A. scotianensis). The inner plate of maxilla 2 is significantly shorter than the outer plate in the A. abyssorum of Barnard & Ingram (1990), but not in the specimen of Stebbing (1888) or to a less extent the specimen of Birstein & Vinogradov (1990). The adze-shaped first coxa separated A. scotianensis separates form these two species but in other characters they are extremely similar. Abyssorchomene gerulicorbis differs from A. chevreuxi mainly in the upper lip which is slightly produced and apically narrowly rounded (upper lip not produced in A. chevreuxi) and in A. gerulicorbis the dactylus of gnathopod 1 has a posterodistal ‘setal basket’ (absent in A. chevreuxi). Distribution. North Atlantic Ocean: Porcupine, Iberian, Madeira, Cape Verde, and Guiana Abyssal Plains (Thurston 1990). North Pacific Ocean: Kuril-Kamchatka (Birstein & Vinogradov 1955); north of Hawaii (Shulenberger & Barnard 1976). South Pacific Ocean: Austral Isles (Lowry & Stoddart 1994); Kermadec Trench (Jamieson et al. 2011); east coast of Australia (this study). Indian Ocean: Crozet Plateau (Cousins et al. 2013)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 9-10, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Shulenberger, E. & Barnard, J. L. (1976) Amphipods from an abyssal trap set in the North Pacific gyre. Crustaceana, 31, 241 - 258. http: // dx. doi. org / 10.1163 / 156854076 x 00035","Birstein, J. A. & Vinogradov, M. E. (1955) Pelagicheskie gammaridy (Amphipoda Gammaridea) Kurilo-Kamchatskoi Vpadiny. Akademiya Nauk SSSR, Trudy Instituta Okeanologii, 12, 210 - 287, 35 figs.","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Palerud, R. & Vader, W. (1991) Marine Amphipoda Gammaridea in north-east Atlantic and Norwegian Arctic. Tromura, Naturvitenskap, 68, 1 - 97.","Jones, E. M., Collins, M. A., Bagley, P. M., Addison, S. & Priede, I. G. (1998) The fate of cetacean carcasses in the deep sea: observations on consumption rates and succession of scavenging Species in the abyssal north-east Atlantic Ocean. Proceedings of the Royal Society of London B, 265 (1401), 1119 - 1127. http: // dx. doi. org / 10.1098 / rspb. 1998.0407","Thurston, M. H. (1990) Abyssal necrophagous amphipods (Crustacea: Amphipoda) in the northeast and tropical Atlantic Ocean. Progress in Oceanography, 24, 257 - 274. http: // dx. doi. org / 10.1016 / 0079 - 6611 (90) 90036 - 2","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.","Jamieson, A. J., Kilgallen, N. M., Rowden, A. A., Fujii, T., Lorz, A. - N., Kitazawa, K. & Priede, I. G. (2011) Bait-attending fauna of the Kermadec Trench, SW Pacific Ocean: Evidence for an ecotone across the abyssal - hadal transition zone. Deep-Sea Research I, 58 (2011), 49 - 62. http: // dx. doi. org / 10.1016 / j. dsr. 2010.11.003","Corrigan, L., Horton, T., Fotherby, H., White, T. A. & Hoelzel, A. R. (2013) Adaptive Evolution of Deep-Sea Amphipods from the Superfamily Lysianassoidea in the North Atlantic. Evolutionary Biology, 41 (1), 154 - 165.","Cousins, N. J., Horton, T., Wigham, B. D. & Bagley, P. M. (2013) Abyssal scavenging demersal fauna at two areas of contrasting productivity on the Subantarctic Crozet Plateau, southern Indian Ocean. African Journal of Marine Science, 35 (2), 299 - 306. http: // dx. doi. org / 10.2989 / 1814232 x. 2013.802747","Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology, 29, 1 - 1737, pls. 1731 - 1210.","Lowry, J. K. & Stoddart, H. E. (1994) Crustacea Amphipoda, Lysianassoids from the tropical western South Pacific Ocean. In: Crosnier, A. (Ed.), Resultats des Campagnes MUSORSTOM. Vol. 12. Memoires de Museum National d'Histoire Naturelle, 161, 127 - 223."]}

Stephonyx normani (Stebbing, 1888) Euonyx normani Stebbing, 1888: 669, pl. 19.— Della Valle, 1893: 842.— Stebbing, 1906: 19.— Pirlot, 1933: 120 (key).—J.L. Barnard, 1958: 92.— Thurston & Allen, 1969: 358.— Mills, 1972: 76 (table 1).— Barnard & Ingram, 1990: 2 (key).— Barnard & Karaman, 1991: 485. Stephonyx normani.— Lowry & Stoddart, 1989: 521.— Diffenthal & Horton, 2007: 39 (key).— Senna & Serejo, 2007: 13 (key).— Narahara et al., 2012: 1505 (key). not Euonyx normani.— Chilton, 1921: 52, figs 5a-d.— Pirlot, 1933: 120 (key).— Sheard, 1937: 19. (= S. pirloti). Types. Holotype female, BMNH 1889: 5: 15: 21 (specimen in alcohol + 8 slides). Type locality. Near the Kermadec Islands (29°45'S 178°11'W), 1152 m depth. Habitat. Marine, volcanic mud. Depth range. 1152 m (Stebbing 1888). Feeding strategies. Unreported. Distribution. Pacific Ocean. Kermadec Islands (Stebbing 1888)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 68, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology, 29, 1 - 1737, pls. 1731 - 1210.","Della Valle, A. (1893) Gammarini del Golfo di Napoli. Fauna und Flora des Golfes von Neapel, 20, 1 - 948, pls. 941 - 961. http: // dx. doi. org / 10.5962 / bhl. title. 3710","Stebbing, T. R. R. (1906) Amphipoda. I. Gammaridea. Das Tierreich, 21, 1 - 806.","Pirlot, J. M. (1933) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II: - Les amphipodes de la mer profonde. 1. (Lysianassidae, Stegocephalidae, Stenothoidae, Pleustidae, Lepechinellidae). Siboga- Expeditie, Monographie, 33 c, 114 - 167.","Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.","Thurston, M. H. & Allen, E. (1969) Type material of the families Lysianassidae, Stegocephalidae, Ampeliscidae and Haustoriidae (Crustacea: Amphipoda) in the collections of the British Museum (Natural History). Bulletin of the British Museum (Natural History), Series Zoology, 17, 347 - 388.","Mills, E. L. (1972) T. R. R. Stebbing, the ' Challenger' and knowledge of deep-sea Amphipoda. Proceedings of the Royal Society of Edinburgh, Series B, 72, 69 - 87. http: // dx. doi. org / 10.1017 / s 0080455 x 00001624","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598","Chilton, C. (1921) Report on the Amphipoda obtained by the F. I. S. \" Endeavour \" in Australian seas. Biological Results of the Fishing Experiments carried on by the F. I. S. \" Endeavour \", 1909 - 14, 5, 33 - 92.","Sheard, K. (1937) A catalogue of Australian Gammaridea. Transactions and Proceedings of the Royal Society of South Australia, 61, 17 - 29."]}

Stephonyx perexcavatus Narahara, Tomikawa & Torigoe, 2012 Stephonyx perexcavatus Narahara, Tomikawa & Torigoe, 2012: 1479, 1505 (key), figs 2–6. Types. Holotype male, 22.9 mm, NSMT-Cr 22011. Paratypes: four males (20.4–22.9 mm) NSMT-Cr 22012–22015; five females (21.9–23.2 mm) NSMT-Cr 22016–22020. Type locality. Okinawa Trough, East China Sea (28°29.5'N, 127°59.2'E), 1073–1080 m. Habitat. Marine, benthic. Depth range. 1073–1080 m (Narahara et al. 2012). Feeding strategies. Scavenger taken in baited trap. Distribution. Pacific Ocean. Okinawa Trough, East China Sea (Narahara et al. 2012)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 68, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Uristes Dana, 1849 (Fig. 49, 50) Uristes Dana, 1849: 136.— Dana, 1852: 209.— Dana, 1853: 917.— Bate, 1862: 89.— Stebbing, 1906: 63.— Stephensen, 1929: 64.—J.L. Barnard, 1962: 35.— Hurley, 1963: 91.—J.L. Barnard, 1969: 367.— Ledoyer, 1986: 816.— Barnard & Karaman, 1991: 538.— Lowry & Stoddart, 2003: 284 (catalogue). Uristoides Schellenberg, 1931: 27.— Barnard & Karaman, 1991: 539 (in part). Type species. Uristes gigas Dana, 1852, monotypy. Included species. Uristes contains 2 species: U. gigas Dana, 1849; U. subchelatus (Schellenberg, 1931). Incertae sedis. Uristes abyssi (Norman, 1900) (family unknown); U. albinus (K.H. Barnard, 1932) (family unknown); U. dawsoni Hurley, 1963 (family unknown); U. entalladurus J.L. Barnard, 1963 (Lysianassidae, Tryphosinae); U. georgianus (Schellenberg, 1931) (family unknown); U. natalensis K.H. Barnard, 1916 (family unknown); U. paramoi (Schellenberg, 1931). Removals. Uristes perspinis J.L. Barnard, 1967 to the tryphosine genus Cedrosella Barnard & Karaman, 1987 based on gnathopod 1 with a tapering first coxa and a short carpus, a non-constricted inner ramus on uropod 2 and a moderately cleft telson. Uristes abyssalis (Stephensen, 1925) is tentatively removed to the tryphosine genus Gronella Barnard & Karaman, 1991, based on mandible molar triturating, gnathopod 1 coxa is slightly tapering, carpus short, propodus margins subparallel and the telson moderately cleft. The condition of the male antenna 2 peduncle (with or without brush setae) and the condition of the inner ramus of uropod 2 (constricted or not) needs to be verified to confirm the generic placement. Uristes barbatipes (Stebbing, 1888) is removed the tryphosine genus Tasmanosa Lowry & Kilgallen, 2014 based on the well-developed antenna 1 accessory flagellum and the triturating molar, maxilla 2 inner plate slightly shorter than outer, the distinctive carpus and propodus of gnathopod 1. Uristes serratus Schellenberg, 1931 and U. yamana Chiesa & Alonso de Pina, 2007 appear to be congeneric, and belong to a yet to be described genus in the Uristidae based on the absence of a callynophore in the female and apparently in the male, the compressed carpus of gnathopod 1 and the cleft telson. Uristes adarei (Walker, 1903); U. antennibrevis J.L. Barnard, 1962; U. californicus Hurley, 1963; U. mediator J.L. Barnard, 1962; U. stebbingi (Walker, 1903); U. sulcus Griffiths, 1974 are removed to the tryphosine genus Tryphosella Bonnier, 1893 based on the triturating molar, maxilla 1 with a 6/5 setal-tooth arrangement, the tapering coxa of gnathopod 1. Uristes velia J.L. Barnard, 1961 is removed to the tryphosine genus Cheirimedon Stebbing, 1888 based on the maxilla 1 setal-tooth arrangement; gnathopod 1 carpus short and propodus margins subparallel; pereopod 4 with weak posteroventral lobe; and telson deeply cleft. Diagnostic description. [based on type species] Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum not forming cap covering callynophore or flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore. Antenna 2 without brush setae. Mandible molar ridge-like, narrow, setose with narrow distal triturating surface. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate slightly shorter than outer plate. Gnathopod 1 subchelate; coxa 1 large, about as long as coxa 2, subrectangular with straight anterior margin or distally subovate; ischium short (length less than 2 × breadth); carpus short (length 1 to 2 × breadth) to long (length 2 to 4 × breadth); propodus margins subparallel or slightly tapering. Uropod 2 inner ramus not constricted. Telson deeply cleft. Remarks. As Chisea & Alonso (2007) point out Uristes is in need of revision. The diagnosis provided here is based on the type species. Of the 23 species currently assigned to Uristes, only two remain. Eight of these species are so poorly described that they cannot be placed. Based on the subchelate first gnathopod with a large coxa with a straight anterior margin and a short carpus Uristes appears to be most similar to the Arctic/boreal genera Anonyx and Onisimus. It differs from both in having a ridge-like narrow setose molar with a distal triturating surface and in not having an accessory flagellum cap. Distribution. Southern Ocean and southern Australian waters., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 80-83, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Dana, J. D. (1849) Synopsis of the genera of Gammaracea. American Journal of Sciences and Arts, Series 2, 8, 135 - 140.","Dana, J. D. (1852) Conspectus crustaceorum quae in orbis terrarum circumnavigatione, CAROLO WILKES e classe Reipublicae Faederatae Duce, lexit et descripsit JACOBUS D. DANA. Pars III. [Amphipoda. No. I.]. Proceedings of the American Academy of Arts and Sciences, 2, 201 - 220.","Dana, J. D. (1853) Crustacea. Part II. United States Exploring Expedition, 14, 689 - 1618, atlas of 96 pls.","Bate, C. Spence (1862) Catalogue of the specimens of Amphipodous Crustacea in the collection of the British Museum. Printed by order of the Trustees [by Taylor and Francis], London, 399 pp. http: // dx. doi. org / 10.5962 / bhl. title. 20901","Stebbing, T. R. R. (1906) Amphipoda. I. Gammaridea. Das Tierreich, 21, 1 - 806.","Stephensen, K. (1929) Amphipoda. Die Tierwelt der Nord- und Ostsee, 14, 1 - 188.","Barnard, J. L. (1962) South Atlantic abyssal amphipods collected by R. V. Vema. Abyssal Crustacea. Vema Research Series, 1, 1 - 78.","Hurley, D. E. (1963) Amphipoda of the family Lysianassidae from the west coast of North and Central America. Allan Hancock Foundation Publications, Occasional Paper, 25, 1 - 160.","Barnard, J. L. (1969) The families and genera of marine gammaridean Amphipoda. Bulletin of the United States National Museum, 271, 1 - 535. http: // dx. doi. org / 10.1163 / 156854082 x 00632","Ledoyer, M. (1986) Crustaces Amphipodes Gammariens. Familles des Haustoriidae a Vitjazianidae. Faune de Madagascar, 59, 599 - 1112.","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.","Schellenberg, A. (1931) Gammariden und Caprelliden des Magellangebietes, Sudgeorgiens und der Westantarktis. Further Zoological Results of the Swedish Antarctic Expedition 1901 - 1903, 2, 1 - 290, pl. 291.","Norman, A. M. (1900) British Amphipoda: Fam. Lysianassidae (concluded). Annals and Magazine of Natural History, Series 7, 5, 196 - 214, pls. 196. http: // dx. doi. org / 10.1080 / 00222930008678268","Barnard, K. H. (1932) Amphipoda. Discovery Reports, 5, 1 - 326, pls. 321.","Barnard, J. L. (1963) Los anfipodos bentonicos ' marinos de la. costa occidental de Baja California. Revista de la Sociedad Mexicana de Historia Natural, 24, 205 - 273.","Barnard, K. H. (1916) Contributions to the crustacean fauna of South Africa. 5. - The Amphipoda. Annals of the South African Museum, 15, 105 - 302, pls. 126 - 128.","Barnard, J. L. (1967) Bathyal and abyssal gammaridean Amphipoda of Cedros Trench, Baja California. Bulletin of the United States National Museum, 260, 1 - 205. http: // dx. doi. org / 10.5479 / si. 03629236.260.1","Barnard, J. L. & Karaman, G. S. (1987) Revisions in classification of gammaridean Amphipoda (Crustacea), Part 3. Proceedings of the Biological Society of Washington, 100, 856 - 875.","Stephensen, K. (1925) Crustacea Malacostraca, VI: (Amphipoda, II). Danish Ingolf-Expedition, 3, 101 - 178.","Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology, 29, 1 - 1737, pls. 1731 - 1210.","Lowry, J. K. & Kilgallen, N. M. (2014) New tryphosine amphipods from Australian waters (Crustacea, Amphipoda, Lysianassidae, Tryphosinae). Zootaxa, 3844 (1), 1 - 64. http: // dx. doi. org / 10.11646 / zootaxa. 3844.1.1","Walker, A. O. (1903) Amphipoda of the ' Southern Cross' Antarctic Expedition. Journal of the Linnean Society of London, Zoology, 29 (187), 38 - 64, pls. 37 - 11.","Griffiths, C. L. (1974) The Amphipoda of southern Africa. Part 4. The Gammaridea and Caprellidea of the Cape Province east of Cape Agulhas. Annals of the South African Museum, 65, 251 - 336.","Bonnier, J. (1893) Les amphipodes du Boulonnais (1). Bulletin Scientifique de la France et de la Belgique, 24, 161 - 207, pls. 5 - 8.","Barnard, J. L. (1961) Gammaridean Amphipoda from depths of 400 to 6000 meters. Galathea Report, 5, 23 - 128."]}

Euonyx Norman, 1867 (Fig. 9) Euonyx Norman, 1867: 202.— Sars, 1891: 116.— Stebbing, 1906: 19 (in part). Pirlot, 1936: 116 (in part).—J.L. Barnard, 1969: 342 (in part).— Lincoln, 1979: 54 (in part).— Lowry & Stoddart, 1989: 519.— Barnard & Karaman, 1991: 485, fig. 92I (in part). Leptochela Boeck, 1876: 190 (homonym, Decapoda) (type species, Opis leptochela Bate & Westwood, 1868, monotypy. Type species. Euonyx chelatus Norman, 1867, monotypy. Included species. Euonyx includes four species: E. chelatus Norman, 1867; E. coecus Pirlot, 1933 E. urania sp. nov.; E. xarifa sp. nov. Incertae sedis. Euonyx conicurus K.H. Barnard, 1955 (genus uncertain); Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore. Antenna 2 without brush setae. Mandible molar a large, asetose flap or absent. Maxilla 1 outer plate with reduced seta-teeth in a modified 7/4 crown. Maxilla 2 inner plate subequal to or significantly shorter than outer plate. Gnathopod 1 chelate; coxa 1 reduced, significantly shorter than coxa 2, tapering distally or subquadrate; ischium long (length 2 × to 4 × breadth) too very long (length 4 × to 6 × breadth) ; carpus long (length 2 to 4 × breadth); propodus margins subparallel. Uropod 2 inner ramus not constricted. Telson deeply cleft. Remarks. Euonyx appears to be the immediate sister taxon of Stephonyx Lowry & Stoddart, 1989. Euonyx has abandoned the scavenging life-style to become an ectoparasite of echinoids and in the process developed severely reduced mouthparts, particularly the seta-teeth of the maxilla 1 outer plate. In Euonyx coecus Pirlot, 1933 the setal-teeth of maxilla 1 appear to be intermediate between Euonyx and Stephonyx, but the mandibular molar is absent, an important characteristic of Euonyx. Distribution. North Atlantic Ocean. Indonesia. Eastern Australia. Key to Euonyx species 1. Antenna 1 peduncular article 1 without anterodistal lobe................................................ E. xarifa - Antenna 1 pedunculararticle 1 withsmalltolargeanterodistallobe............................................ 2 2. Gnathopod 1 carpus longer than propodus........................................................... E. urania - Gnathopod 1 carpusshorterthanorsubequaltopropodus.................................................... 3 3. Urosomite 1 dorsal margin a broad angled wedge................................................... E. chelatus - Urosomite 1 dorsalmarginanacutetriangularprocess.........................................? Euonyxconicurus - Urosomite 1 dorsalmarginaroundedboss..................................................... Euonyxcoecus, Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 18, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Norman, A. M. (1867) Report of the committee appointed for the purpose of exploring the coasts of the Hebrides by means of the dredge. Part II. On the Crustacea, Echinodermata, Polyzoa, Actinozoa, and Hydrozoa. Report of the British Association for the Advancement of Science, 36, 193 - 206.","Sars, G. O. (1891) An Account of the Crustacea of Norway, with Short Descriptions and Figures of all the Species. Vol. I. Amphipoda. Parts 4 - 9. Alb. Cammermeyer, Christiana, 144 pp., 48 pls. [pp. 69 - 212, pls. 225 - 272]","Stebbing, T. R. R. (1906) Amphipoda. I. Gammaridea. Das Tierreich, 21, 1 - 806.","Pirlot, J. M. (1936) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II. - Les amphipodes de la mer profonde. 3: Addendum et partie generale. III. - Les amphipodes littoraux. 1: Lysianassidae, Ampeliscidae, Leucothoidae, Stenothoidae, Phliantidae, Colomastigidae, Ochlesidae, Liljeborgiidae, Oedicerotidae, Synopiidae, Eusiridae, Gammaridae. Siboga-Expeditie, Monographie, 33 e, 237 - 328.","Barnard, J. L. (1969) The families and genera of marine gammaridean Amphipoda. Bulletin of the United States National Museum, 271, 1 - 535. http: // dx. doi. org / 10.1163 / 156854082 x 00632","Lincoln, R. J. (1979) British Marine Amphipoda: Gammaridea. British Museum (Natural History), London, v + 658 pp.","Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Boeck, A. (1876) De Skandinaviske og Arktiske Amphipoder. Part 2. A. W. Brogger, Christiania, pp. 1 - 713, pls. 168 - 132. http: // dx. doi. org / 10.5962 / bhl. title. 10131","Bate, C. S. & Westwood, J. O. (1868) A History of the British Sessile-eyed Crustacea. John Van Voorst, London, 536 pp.","Pirlot, J. M. (1933) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II: - Les amphipodes de la mer profonde. 1. (Lysianassidae, Stegocephalidae, Stenothoidae, Pleustidae, Lepechinellidae). Siboga- Expeditie, Monographie, 33 c, 114 - 167.","Barnard, K. H. (1955) Additions to the fauna-list of South African Crustacea and Pycnogonida. Annals of the South African Museum, 43, 1 - 107."]}

Anonyx Krøyer, 1838a (Fig. 2) Anonyx Krøyer, 1838a: 256.— Krøyer, 1838b: 243.— Stebbing, 1906: 53.— Gurjanova, 1962: 207 (key).— Steele & Brunel, 1968: 949 (key).—J.L. Barnard, 1969: 324.— Lincoln, 1979: 76.— Barnard & Karaman, 1991: 442 (key), 463. Chironesimus Sars, 1891: 108 (type species, Anonyx debruynii Hoek, 1882, monotypy). Lakota Holmes, 1908: 498 (type species, Lakota carinata Holmes, 1908, original designation). Type species. Lysianassa lagena Krøyer, 1838b, selected by Boeck, 1876 (junior synonym of A. nugax (Phipps, 1774)). Included species. Anonyx includes 50 species: A. abei Takekawa & Ishimaru, 2001; A. adoxus Hurley, 1963; A. affinis Ohlin, 1895; A. attenuatus Steele, 1989; A. barrowensis Steele, 1982; A. beringi Steele, 1982; A. birulai Gurjanova, 1962; A. bispinosus Steele, 1967; A. comecrudus J.L. Barnard, 1971; A. compactus Gurjanova, 1962; A. dalli Steele, 1983; A. debruynii Hoek, 1882; A. eous Gurjanova, 1962; A. eousides Steele, 1991; A. epistomicus Kudrjaschov, 1965; A. grebnitzkii Steele, 1991; A. gurjanovai Steele, 1986; A. hayashii Sekiguchi & Yamaguchi, 1983; A. hurleyi Steele, 1986; A. knipowitschi Gurjanova, 1962; A. laticoxae Gurjanova, 1962; A. lilljeborgi Boeck, 1871; A. makarovi Gurjanova,1962; A. minimus Gurjanova, 1962; A. multiarticulatus (Pearse, 1913); A. nugax (Phipps, 1774); A. ochoticus Gurjanova, 1962; A. oculatus Gurjanova, 1962; A. omorii Takekawa & Ishimaru, 2001; A. orientalis Gurjanova, 1962; A. pacificus Gurjanova, 1962; A. pareous Steele, 1991; A. pavlovskii Gurjanova, 1962; A. petersoni Steele, 1986; A. pseudeous Steele, 1991; A. robustus Gurjanova, 1962; A. sarsi Steele & Brunel, 1968; A. schefferi Steele, 1986; A. schokalsii Gurjanova, 1962; A. sculptifer Gurjanova, 1962; A. shoemakeri Steele, 1983; A. simplex Hirayama, 1985; A. stappersi Steele, 1989; A. stebbingi Steele, 1989; A. stegnegeri Steele, 1986; A. validus Gurjanova, 1962; A. volkovi Kudrjaschov, 1965. Incertae sedis. Anonyx anivae Gurjanova, 1962 (gnathopod 1 propodus margins subparallel, antenna 2 without brush setae, mouthparts unknown); A. derjugini Gurjanova, 1962 (accessory flagellum not forming a cap); Anonyx lebedi Gurjanova, 1962 (gnathopod 1 ischium long); Anonyx magnus Gurjanova, 1962 (gnathopod 1 very weakly subchelate and no constriction on uropod 2 inner ramus). Removals. Anonyx lebedi Gurjanova, 1962 to Tmetonyx. Gnathopod 1 with long ischium and propodus with subparallel margins. Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum forming cap covering callynophore. Antenna 2 with brush setae . Mandible molar setose with vestigial triturating surface. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate slightly to significantly shorter than outer plate. Gnathopod 1 subchelate (occasionally parachelate); coxa 1 large, about as long as coxa 2, subrectangular with straight or concave anterior margin; ischium short (length less than 2 × breadth); carpus short (length 1 to 2 × breadth) or long; propodus margins slightly tapering distally. Uropod 2 inner ramus constricted (weak to strong). Telson moderately to deeply cleft. Remarks. Anonyx appears to be most similar to Onisimus. Both genera have a subchelate first gnathopod with a short carpus. However Anonyx has bush setae on antenna 2 (absent in Onisimus) and the molar is a strong setose tongue (a reduced column with triturating surface in Onisimus). Both genera are scavengers with wide-spread distributions in arctic/boreal regions. Anonyx is also similar to Tmetonyx. They differ in the accessory flagellum cap (absent in Tmetonyx), the mandibular molar (setose with a reduced column with convex triturating surface in Tmetonyx), the ischium of gnathopod 1 (long in Tmetonyx), and the margins of the propodus (subparallel in Tmetonyx)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 10, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Kroyer, H. N. (1838 a) Conspectus crustaceorum Groenlandiae. Naturhistorisk Tidsskrift, 2, 249 - 261.","Kroyer, H. N. (1838 b) Gronlands amfipoder beskrevne af Henrik Kroyer. (Som Tellaeg; Beskrivelse af nogle andre gronlandske Draebsdyr, og Optaelling af Draebsdyrklassens hidtil bekjendte gronlandske Arter, i Forbindelse med nogle zoologiskgeografiske ... boreale Krustaceer). Det Kongelige Danske Videnskabernes Selskabs naturvidensdabelige og mathematiske Afhandlinger, Kjobenhavn 4, 7, 229 - 326, pls. 221 - 224.","Stebbing, T. R. R. (1906) Amphipoda. I. Gammaridea. Das Tierreich, 21, 1 - 806.","Gurjanova, E. F. (1962) Amphipods of the northern part of the Pacific Ocean (Amphipoda-Gammaridea). Part 1. Akademiya Nauk SSSR, Opredeliteli po Faune SSSR, 74, 1 - 440.","Steele, D. H. & Brunel, P. (1968) Amphipoda of the Atlantic and Arctic coasts of North America: Anonyx (Lysianassidae). Journal of the Fisheries Research Board of Canada, 25, 943 - 1060. http: // dx. doi. org / 10.1139 / f 68 - 087","Barnard, J. L. (1969) The families and genera of marine gammaridean Amphipoda. Bulletin of the United States National Museum, 271, 1 - 535. http: // dx. doi. org / 10.1163 / 156854082 x 00632","Lincoln, R. J. (1979) British Marine Amphipoda: Gammaridea. British Museum (Natural History), London, v + 658 pp.","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Sars, G. O. (1891) An Account of the Crustacea of Norway, with Short Descriptions and Figures of all the Species. Vol. I. Amphipoda. Parts 4 - 9. Alb. Cammermeyer, Christiana, 144 pp., 48 pls. [pp. 69 - 212, pls. 225 - 272]","Hoek, P. P. C. (1882) Die Crustaceen, gesammelt wahrend des Fahrten des \" Willem Barents \" in den Jahren 1878 und 1879. Niederlandisches Archiv fur Zoologie, 1 (Supplement), 1 - 75, 73 pls.","Holmes, S. J. (1908) The Amphipoda collected by the U. S. Bureau of Fisheries steamer \" Albatross \" off the west coast of North America, in 1903 and 1904, with descriptions of a new family and several new genera and species. Proceedings of the United States National Museum, 35, 489 - 543. http: // dx. doi. org / 10.5479 / si. 00963801.35 - 1654.489","Boeck, A. (1876) De Skandinaviske og Arktiske Amphipoder. Part 2. A. W. Brogger, Christiania, pp. 1 - 713, pls. 168 - 132. http: // dx. doi. org / 10.5962 / bhl. title. 10131","Phipps, C. J. (1774) Appendix: natural history. In: Phipps, C. J. (Ed.), A Voyage towards the North Pole, undertaken by His Majesty's Command, 1773. J. Nourse, London, pp. 191 - 193.","Takekawa, A. & Ishimaru, S. (2001) Two new species of the genus Anonyx (Amphipoda: Gammaridea: Lysianassoidea) from Onagawa Bay, northeastern Japan. Zoological Science, 18, 405 - 416. http: // dx. doi. org / 10.2108 / zsj. 18.405","Hurley, D. E. (1963) Amphipoda of the family Lysianassidae from the west coast of North and Central America. Allan Hancock Foundation Publications, Occasional Paper, 25, 1 - 160.","Ohlin, A. (1895) Bidrag till kannedomen om Malakostrakfaunan i Baffin Bay och Smith Sound. Acta Universitatis Lundensis, 31, i - xxii, 1 - 70, plates 1 - 71, maps 1 - 71.","Steele, D. H. (1989) The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic Oceans: Anonyx compactus group. Canadian Journal of Zoology, 67, 1945 - 1954. http: // dx. doi. org / 10.1139 / z 89 - 278","Steele, D. H. (1982) The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic Oceans: Anonyx nugax group. Canadian Journal of Zoology, 60, 1754 - 1775. http: // dx. doi. org / 10.1139 / z 82 - 228","Steele, D. H. (1967) A new species of the genus Anonyx (Amphipoda) from the Barents Sea. Crustaceana, 13, 257 - 264. http: // dx. doi. org / 10.1163 / 156854067 x 00431","Barnard, J. L. (1971) Gammaridean Amphipoda from a deep-sea transect off Oregon. Smithsonian Contributions to Zoology, 61, 1 - 86. http: // dx. doi. org / 10.5479 / si. 00810282.61","Steele, D. H. (1983) The genus Anonyx (Crustacea, Amphipoda) in the North Pacific Ocean: Anonyx validus group. Canadian Journal of Zoology, 61, 2921 - 2931. http: // dx. doi. org / 10.1139 / z 83 - 380","Steele, D. H. (1991) The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic oceans: the Anonyx bispinosus group. Canadian Journal of Zoology, 69, 1600 - 1611. http: // dx. doi. org / 10.1139 / z 91 - 224","Kudrjaschov, V. A. (1965) New amphipod species of the family Lysianassidae (Amphipoda-Gammaridea) from the Okhotsk Sea. Zoologichesky Zhurnal, 44, 513 - 520.","Steele, D. H. (1986) The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic Oceans: Anonyx laticoxae group. Canadian Journal of Zoology, 64, 2603 - 2623. http: // dx. doi. org / 10.1139 / z 86 - 380","Sekiguchi, H. & Yamaguchi, Y. (1983) Scavenging gammaridean amphipods from the deep-sea floor. Bulletin of the Faculty of Fisheries, Mie University, 10, 1 - 14.","Boeck, A. (1871) Crustacea Amphipoda borealia et arctica. Forhandlinger i Videnskabs-Selskabet i Christiania, 1870, 81 - 280, i - viii. [index] http: // dx. doi. org / 10.5962 / bhl. title. 2056","Pearse, A. S. (1913) Notes on a small collection of amphipods from the Pribilof Islands, with descriptions of new species. Proceedings of the United States National Museum, 45, 571 - 573. http: // dx. doi. org / 10.5479 / si. 00963801.45 - 1998.571","Hirayama, A. (1985) Taxonomic Studies on the Shallow Water Gammaridean Amphipoda of West Kyushu, Japan V. Leucothoidae, Liljeborgiidae, Lysianassidae (Prachynella, Aristias, Waldeckia, Ensayara, Lepidepecreum, Hippomedon and Anonyx). Publications of the Seto Marine Laboratory, 30 (4 / 6), 167 - 212."]}

Nagada Lowry & Stoddart, 1995 (Fig. 26) Nagada Lowry & Stoddart, 1995b: 146.— Lowry & Stoddart, 2003: 283. Type species. Nagada uwedoae Lowry & Stoddart, 1995, by original designation. Included species. Nagada includes three species: N. garagassi Lowry & Stoddart, 1995b; N. papua Lowry & Stoddart, 1995b; Nagada uwedoae Lowry & Stoddart, 1995b. Diagnostic description. Antenna 1 peduncle without posterodistal lobe or spine; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore. Antenna 2 without brush setae. Mandible incisors large, convex; left lacinia mobilis a cuspidate peg; molar a setose tongue. Maxilla 1 outer plate setal-teeth a well developed 7/4 crown. Maxilla 2, inner plate significantly shorter than outer. Gnathopod 1 simple; coxa large, about as large as coxa 2 with a straight anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), dactylus with or without complex spines on posterior margin. Uropod 2 inner ramus constricted. Uropod 3 outer ramus article 2 long. Telson entire. Remarks. Based on simple first gnathopod with long ischium and an entire telson Nagada is similar to Eclecticus. Both genera have the mandibular palp attached midway, both have a well developed 7/4 crown on the outer plate of maxilla 1, and both have a long ischium on the first gnathopod. They differ mainly in the dactylus of gnathopod 1 which has an explosion of complex setae on the anterior margin in Eclecticus., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 41, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Lowry, J. K. & Stoddart, H. E. (1995 b) The Amphipoda (Crustacea) of Madang Lagoon: Lysianassidae, Opisidae, Uristidae, Wandinidae and Stegocephalidae. Records of the Australian Museum, Supplement, 22, 97 - 174. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.22.1995.122","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp."]}

Nagada papua Lowry & Stoddart, 1995 Nagada papua Lowry & Stoddart, 1995: 150, figs 31–33. Types. Holotype, female, 3.8 mm, AM P.41599. Paratypes: 8 females, AM P.41600; 1 male, AM P.41601; 83 specimens, AM P.41602; 20 specimens, AM P.41603; 10 specimens, BMNH 1995.582.591; 10 specimens, USNM 274111. Type locality. Face of outer barrier between Dam Awan (Rasch Passage) and Wongad, Astrolabe Bay, Papua New Guinea (5°08.59’S 145°49.65’E), 290 m depth. Habitat. Marine. Depth range. 50–290 m (Lowry & Stoddart 1995). Feeding strategies. Scavenger, taken in baited traps. Distribution. Papua New Guinea. Astrolabe Bay (Lowry & Stoddart 1995).

Stephonyx scutatus (Griffiths, 1977) Euonyx scutatus Griffiths, 1977: 98, fig. 3.— Barnard & Ingram, 1990: 3 (key).— Barnard & Karaman, 1991: 485. Stephonyx scutatus.— Lowry & Stoddart, 1989: 521.— Diffenthal & Horton, 2007: 40 (key).— Senna & Serejo, 2007: 13 (key).— Narahara et al., 2012: 1505 (key). Types. Holotype female, 16 mm, SAM A13652. Type locality. Cape Basin, South Atlantic Ocean (34°37'S 17°03'E). Habitat. Marine. Depth range. 2900 m (Griffiths 1977). Remarks. Stephonyx scutatus is different from other species of Stephonyx in the dorsal body carination and in the peculiar conical hump of coxa 5. The mandibular molar, described as ‘a large plate with raised margins’ is not like the setose tongues or triturating molars usually found in scavenging uristids and particularly in Stephonyx. Distribution. South Atlantic Ocean. Cape Basin (Griffiths 1977)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 78, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Griffiths, C. L. (1977) Deep-sea amphipods from west of Cape Point, South Africa. Annals of the South African Museum, 73, 93 - 104.","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Stephonyx incertus Bellan-Santini, 1997 Stephonyx incertus Bellan-Santini, 1997: 16, figs 9, 10.— Ortiz et al., 2007: 516.— Diffenthal & Horton, 2007: 40 (key).— Senna & Serejo, 2007: 13 (key).— Narahara et al., 2012: 1506 (key). Types. Holotype, 8 mm, MNHN-Am 4904. Type locality. Barbados trench, North Atlantic Ocean (10°19.97'N 58°37.30'W), 1947 m depth. Habitat. Marine, cold-seeps. Depth range. 1947 m (Bellan-Santini 1997). Distribution. North Atlantic Ocean. Barbados trench (Bellan-Santini 1997)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 67, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Bellan-Santini, D. (1997) Amphipods of the cold seep community on the South Barbados Accretionary Prism. Crustaceana, 70, 1 - 30. http: // dx. doi. org / 10.1163 / 156854097 x 00311","Ortiz, M., Martin, A. & Diaz, Y. J. (2007) Lista y referencias de los crustaceos anfipodos (Amphipoda: Gammaridea) del Atlantico occidental tropical. Revista de Biologia Tropical, 55 (2), 479 - 528. http: // dx. doi. org / 10.15517 / rbt. v 55 i 2.6026","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Euonyx urania sp. nov. (Figs 10–12) Types. Holotype, female, 19.0 mm, AM P.68881, east of Broken Bay, New South Wales, Australia (33°35.0’S 152°05.0’E to 37°37.0’S 152°05.0’E), 1144 m, dredge 10 December 1980, FRV Kapala [K80-20-10]. Type locality. East of Broken Bay, New South Wales, Australia (33°35.0’S 152°05.0’E to 37°37.0’S 152°05.0’E), 1144 m depth. Etymology. Named for the sailing vessel Urania lost off the central New South Wales coast in December 1876; used as a noun in apposition. Description. Based on holotype, female, 19.0 mm. Head, lateral cephalic lobe subtriangular, apically acute and slightly upturned; eyes apparently absent. Antenna 1 peduncular article 1 with well-developed anterodistally rounded lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 6-articulate, terminal article not offset; primary flagellum with strong 2-field callynophore; robust setae present on proximal articles; calceoli absent. Antenna 2 peduncle articles 3 to 5 not enlarged, brush setae absent; flagellum long; calceoli absent. Labrum, epistome and upper lip separate; epistome less produced than upper lip, slightly concave; upper lip produced, downward-pointing and acute apically. Mandible incisor small, left and right slightly asymmetrical; molar absent; palp attached about midway, article 2 with central bulge. Maxilla 1 outer plate setal-tooth 7 present, not cuspidate; palp distal margin with apical robust setae. Maxilla 2 inner plate significantly shorter than outer plate. Maxilliped outer plate apical robust setae absent (with 3 subapical robust setae along inner margin). Gnathopod 1 chelate; coxa vestigial, significantly shorter than coxa 2, subquadrate; basis sparsely setose along anterior margin; ischium very long (length 4 × to 6 × breadth); carpus very long (length more than 4 × breadth), longer than propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, straight; dactylus simple. Gnathopod 2 propodus palm slightly acute. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin weakly or not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner forming, weak spine. Urosomite 1 not projecting over urosomite 2, with a weakly produced, broadly truncated boss. Uropod 2 inner ramus without constriction. Peduncle without dorsolateral flange; outer ramus article 2 short, without plumose setae on rami. Telson deeply cleft. Sexually dimorphic characters. Unknown. Depth range. 1144 m. Remarks. See remarks under E. chelatus. Distribution. Australia. New South Wales.

Parschisturella medora sp. nov. (Figs 33–35) Types. Holotype, female, 11.0 mm, NMV J67756, 96 km south of Point Hicks, Victoria, Australia (38°40.29'S 149°18.06'E), 2900 m, compacted clay, WHOI epibenthic sled, 25 October 1988, G.C.B. Poore et al., RV Franklin [SLOPE 66]. Paratypes: 8 specimens, 4.0– 8.7 mm, NMV J67757; 1 female, 10.3 mm, NMV J67758; 6 specimens, 5.4–10.2 mm, NMV J17167, same collection details as holotype. Type locality. 96 km south of Point Hicks, Victoria, Australia (38°40.29'S 149°18.06'E), 2900 m depth. Etymology. Named for the brig Medora which caught fire off the Tamar Heads, Tasmania, on the morning of 31 July 1854 and was scuttled after cutting away the mast; used as a noun in apposition. Additional material examined. Tasmania. 18 specimens, AM P.71839, east of Cape Naturaliste, Tasmania, Australia (40°45.93’S 149°1.62’E), 2400–2500 m, sledge, 10 December 1986, P.A. Hutchings, W.F. Ponder & R. T. Springthorpe, RV Franklin [FR1086-04]; 1 specimen, NMV J67760, 48 km east-north-east of Cape Tourville (42°00.25'S 148°43.55'E to 41°57.77'S 148°42.08'E), 1264– 1130 m, gravel with lumps of sandy mud aggregate, WHOI epibenthic sled, 30 October 1988, G.C.B. Poore et al., RV Franklin [SLOPE 81]. Victoria. 1 specimen, NMV J67759, 67 km south of Point Hicks (38°23.95'S 149°17.02'E), 1277 m, fine mud, WHOI epibenthic sled, 25 October 1988, G.C.B. Poore et al., RV Franklin [SLOPE 67]. Description. Based on holotype, female, 11.0 mm, NMV J67756. Head, lateral cephalic lobe subtriangular, apically subacute. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, 5-articulate, terminal article not offset; primary flagellum with strong 1-field callynophore; robust setae absent from proximal articles; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged; flagellum short; calceoli absent. Labrum, epistome and upper lip fused, concave; ventrally produced, acute apically. Mandible incisor large, left and right very slightly asymmetrical; molar with asymmetrically reduced column, proximally setose, distally triturating; palp attached slightly distally, article 2 margins subparallel, article 3 bladelike. Maxilla 1 outer plate setal-tooth 7 present, left and right symmetrical, cuspidate distally along inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with 6 long, apical robust setae. Gnathopod 1 weakly subchelate; coxa large, about as long as coxa 2, distally subovate; basis moderately to densely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), longer than propodus, without posterior lobe; propodus margins tapering distally; dactylus with large subapical spine. Gnathopod 2 propodus palm slightly obtuse; dactylus fitting palm. Pereopod 4 coxa with a welldeveloped posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis about as long as broad, posterior margin weakly serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner acutely produced, forming weak spine. Urosomite 1 not projecting over urosomite 2, with a weakly produced, broadly truncated boss. Uropod 2 inner ramus without constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, without plumose setae on rami. Telson deeply cleft, without dorsal robust setae, with 1 apical robust setae on each lobe. Sexually dimorphic characters. Male unknown. Depth range. 1264–2900 m. Remarks. The Australian species Parschisturella medora and P. piloti both have weakly subchelate first gnathopods. The most conspicuous differences between these species is the posteroventral corner of epimeron 3 (forming a small spine in P. medora and with a small notch above the corner in P. piloti), and the dorsal margin of urosomite 1 (a weakly produced, broadly truncated boss in P. medora and a rounded margin in P. piloti). Distribution. Australia. Coasts of Victoria and Tasmania, Bass Strait., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 54-57, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734

Stephonyx uncinatus Senna & Serejo, 2007 Stephonyx uncinatus Senna & Serejo, 2007: 8, figs 1–3.— Narahara et al., 2012: 1506 (key). Types. Holotype, male, 36 mm, MNRJ 19498. Paratypes: 13 specimens (four males, five females, four juveniles), MNRJ 18292; four specimens (one male, two females, one juvenile), MNRJ 18293. Type locality. Off the coast of Bahia State, Brazil (14°27’654”S 38°51’130”W), 730–739 m depth. Habitat. Marine. Depth range. 687–739 m (Senna & Serejo 2007). Feeding strategies. Scavenger, taken in baited traps (Senna & Serejo 2007). Distribution. Brazil. Off the coast of Bahia State (Senna & Serejo 2007)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 78, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Nagada papua Lowry & Stoddart, 1995 Nagada papua Lowry & Stoddart, 1995: 150, figs 31–33. Types. Holotype, female, 3.8 mm, AM P.41599. Paratypes: 8 females, AM P.41600; 1 male, AM P.41601; 83 specimens, AM P.41602; 20 specimens, AM P.41603; 10 specimens, BMNH 1995.582.591; 10 specimens, USNM 274111. Type locality. Face of outer barrier between Dam Awan (Rasch Passage) and Wongad, Astrolabe Bay, Papua New Guinea (5°08.59’S 145°49.65’E), 290 m depth. Habitat. Marine. Depth range. 50–290 m (Lowry & Stoddart 1995). Feeding strategies. Scavenger, taken in baited traps. Distribution. Papua New Guinea. Astrolabe Bay (Lowry & Stoddart 1995)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 44, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734

Parschisturella carinata (Schellenberg, 1926b) Hoplonyx stebbingi Walker, 1903: 52, pl. 9 figs 52–57 (in part, part = Uristes stebbingi). Tryphosa kergueleni.— Walker, 1907: 16 (in part). Tryphosites stebbingi.— Chilton, 1912: 469. Tryphosa carinata Schellenberg, 1926b: 271, fig. 18.— Schellenberg, 1931: 36.—J.L. Barnard, 1962: 29. Tmetonyx carinata.—K.H. Barnard, 1932: 55.—J.L. Barnard, 1958: 100. Tryphosites capadarei.— Hurley, 1965: 177, figs 14, 15.— Thurston & Allen, 1969: 372.— Lowry & Bullock, 1976: 109.— Andres, 1983: 212. 'Tryphosa' carinata.—J.L. Barnard, 1969: 304 (key).— Lowry & Bullock, 1976: 106. Parschisturella carinata.— Barnard & Karaman, 1991: 517.— Klages, 1991: 50.— De Broyer & Jazdzewski, 1993: 74.— De Broyer et al., 1999: 166.— Dauby et al., 2001: 81.— De Broyer et al., 2001: 746, table 1.— Nyssen et al., 2002: 282, 283, table 1, fig. 4.— De Broyer et al., 2004: 1740, tables 3, 4.— De Broyer et al., 2007: 165. Types. Syntypes, ZMB 20304. Type-locality. Davis Sea “Gauss Station” (66°02’S 89°38’E), 385 m. Habitat. Marine. Depth range. 14–2081 m (Walker 1907; De Broyer et al. 2001). Feeding strategies. Scavenger, taken in baited traps. Remarks. Parschisturella carinata is the most distinctive species in the genus because of the parachelate first gnathopod with its serrate palm. It is the only species with a distict constriction on the outer ramus of uropod 2. It shares a rounded boss on urosomite 1 with the Ausralian species P. martrudan and P. piloti. It shares a well developed spine on the posteroventral corner of epimeron 3 with the Australian species P. martrudan and P. medora. Distribution. Southern Ocean. Davis Sea (Schellenberg 1926b); Ross Sea (Walker 1903, 1907); Weddell Sea (Chilton 1912; De Broyer et al. 1999; De Broyer et al. 2004); South Georgia (Schellenberg 1931); South Shetland Islands (K.H. Barnard 1932)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 48-50, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Schellenberg, A. (1926 b) Die Gammariden der Deutschen Sudpolar-Expedition 1901 - 1903. Deutsche Sudpolar-Expedition, 18, 235 - 414.","Walker, A. O. (1903) Amphipoda of the ' Southern Cross' Antarctic Expedition. Journal of the Linnean Society of London, Zoology, 29 (187), 38 - 64, pls. 37 - 11.","Walker, A. O. (1907) Crustacea III. - Amphipoda. National Antarctic Expedition 1901 - 1904. Natural History, 3, 1 - 38, pls. 31 - 13.","Chilton, C. (1912) The Amphipoda of the Scottish National Antarctic Expedition. Transactions of the Royal Society of Edinburgh, 48, 455 - 520, pls. 451, 452.","Schellenberg, A. (1931) Gammariden und Caprelliden des Magellangebietes, Sudgeorgiens und der Westantarktis. Further Zoological Results of the Swedish Antarctic Expedition 1901 - 1903, 2, 1 - 290, pl. 291.","Barnard, J. L. (1962) South Atlantic abyssal amphipods collected by R. V. Vema. Abyssal Crustacea. Vema Research Series, 1, 1 - 78.","Barnard, K. H. (1932) Amphipoda. Discovery Reports, 5, 1 - 326, pls. 321.","Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.","Hurley, D. E. (1965) A re-description of some A. O. Walker types of \" Southern Cross \" Lysianassidae (Crustacea Amphipoda) from the Ross Sea. Transactions of the Royal Society of New Zealand, Zoology, 6, 155 - 181.","Thurston, M. H. & Allen, E. (1969) Type material of the families Lysianassidae, Stegocephalidae, Ampeliscidae and Haustoriidae (Crustacea: Amphipoda) in the collections of the British Museum (Natural History). Bulletin of the British Museum (Natural History), Series Zoology, 17, 347 - 388.","Lowry, J. K. & Bullock, S. (1976) Catalogue of the marine gammaridean Amphipoda of the Southern Ocean. Royal Society of New Zealand Bulletin, 16, 1 - 187.","Andres, H. G. (1983) Die Gammaridea (Crustacea: Amphipoda) der Deutschen Antarktis-Expeditionen 1975 / 76 und 1977 / 78. 3. Lysianassidae. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 80, 183 - 220.","Barnard, J. L. (1969) The families and genera of marine gammaridean Amphipoda. Bulletin of the United States National Museum, 271, 1 - 535. http: // dx. doi. org / 10.1163 / 156854082 x 00632","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Klages, M. (1991) Biologische und populationsdynamische Untersuchungen an ausgewahlten Gammariden (Crustacea; Amphipoda) des sudostlichen Weddellmeeres, Antarktis. Dissertation Dr. Naturwissenschaften, Universitat Bremen, 240 pp.","De Broyer, C. & Jazdzewski, K. (1993) Contribution to the marine biodiversity inventory. A checklist of the Amphipoda (Crustacea) of the Southern Ocean. Documents de Travail de l'Institut Royal des Sciences Naturelles de Belgique, 73, 1 - 154.","De Broyer, C., Rauschert, M. & Scailteur, Y. (1999) Structural and ecofunctional biodiversity of the benthic amphipod taxocoenoses. Berichte zur Polarforschung, 301, 163 - 174.","Dauby, P., Scailteur, Y. & De Broyer, C. (2001) Trophic diversity within the eastern Weddell Sea amphipod community. Hydrobiologia, 443, 69 - 86.","De Broyer, C., Scailteur, Y., Chapelle, G. & Rauschert, M. (2001) Diversity of epibenthic habitats of gammaridean amphipods in the eastern Weddell Sea. Polar Biology, 24, 744 - 753. http: // dx. doi. org / 10.1007 / s 003000100276","Nyssen, F., Brey, T., Lepoint, G., Bouquegneau, J. M., De Broyer, C. & Dauby, P. (2002) A stable isotope approach to the eastern Weddell Sea trophic web: focus on benthic amphipods. Polar Biology, 25, 280 - 287.","De Broyer, C., Guerra-Garcia, J. M., Takeuchi, I., Robert, H. & Meerhaeghe, A. (2004) Biodiversity of the Southern Ocean: a catalogue of the Antarctic and sub-Antarctic Caprellidae and Cyamidae (Crustacea: Amphipoda) with distribution and ecological data. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique Biologie, 74, 61 - 99.","De Broyer, C., Lowry, J. K., Jazdzewski, K. & Robert, H. (2007) Catalogue of the Gammaridean and Corophiidean Amphipoda (Crusteacea) of the Southern Ocean with distribution and ecological data. In: C. De Broyer (Ed), Census of Antatrctic Marine Life: Synopsis of the Amphipoda of the Southern Ocean. Vol. 1. Bulletin de l'Institut Royal des Sciences Naturelles de Belqigue, Biologie 77, Supplement 1 (1), 1 - 325."]}

Parschisturella martrudan sp. nov. (Figs 30–32) Types. Holotype, female, 12.0 mm, AM P.69042, east of Broken Bay, New South Wales, Australia (33°37'S 152°04'E to 33°39’S 152°02’E), 896–923 m, dredge, 10 December 1980, R. T. Springthorpe, FRV Kapala [K80-20- 09]. Paratypes: 1 male, 10.2 mm, AM P.69044, north-east of Port Jackson, New South Wales, Australia (33°41’S 152°00’E to 33°44’S 151°57’E), 820–888 m, beam trawl, 11 February 1986, R. T. Springthorpe, FRV Kapala [K86-01-07]; 1 female, 12.8 mm, AM P.69045, east of Broken Bay, New South Wales, Australia (33°30’S 152°09’E to 33°33’S 152°11’E), 922–1015 m, beam trawl, 12 February 1986, R. T. Springthorpe, FRV Kapala [K86-01-08]. Type locality. East of Broken Bay, New South Wales, Australia (33°37'S 152°04'E to 33°39’S 152°02’E), 896–923 m depth. Additional material described. New South Wales. 1 specimen, AM P.44445, off Wollongong (34°32.25'S 151°15.16'E), 300 m, baited trap, 6 May 1993 – 7 May 1993, P. Freewater & party, MV Robin E [NSW-782]; 3 specimens, AM P.69041, east of Broken Bay (33°31’S 152°08’E to 33°33’S 152°07’E), 914 m, 2.5 m sled dredge, 10 December 1980, R. T. Springthorpe, FRV Kapala [K80-20-08]; 2 females, AM P.69043, east of Broken Bay (33°37’S 152°04’E to 33°39’S 152°02’E), 896–923 m, dredge, 10 December 1980, R. T. Springthorpe, FRV Kapala [K80-20-09]; 1 male, AM P.69046, east of Broken Bay (33°30’S 152°09’E to 33°33’S 152°11’E), 922–1015 m, beam trawl, 12 February 1986, R. T. Springthorpe, FRV Kapala [K86-01-08]; 1 specimen, AM P.69047, east of Broken Bay (33°30’S 152°12’E to 33°33’S 152°09’E), 1053–1066 m, beam trawl, 12 February 1986, R. T. Springthorpe, FRV Kapala [K86-01-10]. Tasmania. 16 specimens, AM P.51146; 8 specimens, AM P.51164, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-365 & TAS-367]; 539 specimens, AM P.51176; 503 specimens, AM P.51179, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-383 & TAS-384]; 5 specimens, AM P.51310; 10 specimens, AM P.51313; 41 specimens, AM P.51381; 180 specimens, AM P.57977, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-401, TAS-403 & TAS-422-423]; 43 specimens, AM P.51357, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-419]; 315 specimens, AM P.51388; 1 specimen, AM P.56090, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-421]; many specimens, AM P.73705, 76.8km south-south-east of South East Cape, Main Pedra Hill (44°15.6'S 147°07.8'E), 1312 m, baited trap, 21–24 January 1997, CSIRO party, FRV Southern Surveyor [SS01/97/ 08]. 4 specimens, NMV J67753, 48 km east-north-east of Cape Tourville (42°00.25'S 148°43.55'E to 41°57.77'S 148°42.08'E), 1264– 1130 m, gravel with lumps of sandy mud aggregate, WHOI epibenthic sled, 30 October 1988, G.C.B. Poore et al., RV Franklin [SLOPE 81]; 19 specimens, NMV J67754, off Freycinet Peninsula (42°2.20 'S 148°38.70'E), 800 m, coarse shelly sand, WHOI epibenthic sled, 27 July 1986, M.F. Gomon et al., RV Franklin [SLOPE 45]. Victoria. 2 specimens, NMV J67755, south of Point Hicks (38°19.60'S 149°24.30'E), 930 m, rock, rubble, clay, sand, biogenic sediment, WHOI epibenthic sled, 23 July 1986, M.F. Gomon et al., RV Franklin [SLOPE 33]. Etymology. Named for the beautiful crayfishing boat MV Martrudan which collected many of the amphipods used in this and other studies of Australian lysianassoid amphipods; used as a noun in apposition. Description. Based on holotype, female, 12.0 mm, AM P.69042. Head, lateral cephalic lobes subtriangular, apically subacute. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, 5-articulate, terminal article not offset; primary flagellum with strong 1-field callynophore; robust setae absent from proximal articles; calceoli absent. Antenna 2 peduncular article 3 short, articles 3 to 5 not enlarged, brush setae absent; flagellum short; calceoli absent. Labrum, epistome and upper lip separate; epistome less produced than upper lip, straight; upper lip produced, strongly acute apically. Mandible incisor large, left and right symmetrical; molar with asymmetrically reduced column, proximally setose, distally triturating; palp attached about midway, article 2 margins subparallel, article 3 blade-like. Maxilla 1 outer plate setal-tooth 7 present, left and right symmetrical, cuspidate distally along inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with one slender and one broad apical robust setae. Gnathopod 1 simple; coxa large, about as long as coxa 2, subrectangular with straight anterior margin; basis moderately to densely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), slightly longer than propodus, without posterior lobe; propodus margins tapering distally; dactylus simple. Gnathopod 2 propodus palm transverse, dactylus distinctly shorter than palm. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis about as long as broad, posterior margin weakly or not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner acutely produced, forming weak spine. Urosomite 1 not projecting over urosomite 2, dorsally rounded. Uropod 2 inner ramus with slight constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with few plumose setae on inner ramus. Telson moderately cleft, without dorsal robust setae, with 2 apical robust setae on each lobe. Sexually dimorphic characters. Based on paratype male, 10.2 mm, AM P.69044. Antenna 1 primary flagellum with strong 2-field callynophore; robust setae absent from proximal articles; calceoli present. Antenna peduncular brush setae present; calceoli present. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with plumose setae on both rami. Depth range. 820–1312 m. Remarks. Parschisturella martrudan and P. simplex appear to be the only species with truly simple first gnathopods. In Parschisturella martrudan the cusps on the medial margin of setal-tooth 7 are distal in P. martrudan (along most of the medial margin in P. simplex); the gnathopod 2 dactylus is shorter than the palm in P. martrudan (fitting the palm in P. simplex); the dorsal margin of urosomite 1 is evenly rounded in P. martrudan (straight in P. simplex) and the telson is moderately cleft (deeply cleft in P. simplex). Distribution. Australia. New South Wales: east of Broken Bay; off Wollongong. Tasmania: east of Fortescue Bay; south-south-east of South East Cape, Main Pedra Hill; east-north-east of Cape Tourville. Victoria: south of Point Hicks., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 50-53, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734

Galathella Barnard & Karaman 1987 (Fig. 16) Galathella Barnard & Karaman 1987: 866.— Barnard & Karaman 1991: 488.—Lowry & Stoddart, 1995: 12.— Lowry & Stoddart 2003: 281 (catalogue). Type species. Schisturella galatheae Dahl, 1959, original designation. Included species. Galathella includes 5 species: G. bassiana Lowry & Stoddart, 1995; G. galatheae (Dahl, 1959); G. latipes (Ledoyer, 1986); G. palana Lowry & Stoddart, 1995; G. solivagus Kilgallen, 2009. Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore. Antenna 2 without brush setae. Mandible molar a reduced column with triturating surface. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate slightly shorter to significantly shorter than outer plate. Gnathopod 1 weakly to strongly subchelate or simple; coxa 1 reduced or large, shorter than coxa 2, tapering; ischium short (length less than 2 × breadth) or long (length more than 2 × breadth); carpus long to very long (greater than 2 × breadth); propodus margins tapering distally. Uropod 2 inner ramus not constricted. Telson moderately to deeply cleft. Remarks. Galathella is the only uristid with gnathopod 1 coxa slightly shorter than coxa 2 and tapering distally, similar to Ventiella in which coxa 1 is more reduced and tapering. These genera differ mainly in maxilla 2 (inner plate longer than outer plate in Ventiella) and in the cleftness of the telson (moderately to deeply in Galathella and notched in Ventiella). Distribution. South-western Pacific Ocean: Kermadec Trench. Eastern Australia. Western Indian Ocean., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 28, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Barnard, J. L. & Karaman, G. S. (1987) Revisions in classification of gammaridean Amphipoda (Crustacea), Part 3. Proceedings of the Biological Society of Washington, 100, 856 - 875.","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.","Dahl, E. (1959) Amphipoda from depths exceeding 6000 meters. Galathea Report, 1, 211 - 241.","Ledoyer, M. (1986) Crustaces Amphipodes Gammariens. Familles des Haustoriidae a Vitjazianidae. Faune de Madagascar, 59, 599 - 1112.","Kilgallen, N. M. (2009) New species of lysianassoid Amphipoda (Crustacea) associated with seamounts, marine canyons and cold seeps of New Zealand. Zootaxa, 2298, 1 - 30."]}

Stephonyx perexcavatus Narahara, Tomikawa & Torigoe, 2012 Stephonyx perexcavatus Narahara, Tomikawa & Torigoe, 2012: 1479, 1505 (key), figs 2–6. Types. Holotype male, 22.9 mm, NSMT-Cr 22011. Paratypes: four males (20.4–22.9 mm) NSMT-Cr 22012–22015; five females (21.9–23.2 mm) NSMT-Cr 22016–22020. Type locality. Okinawa Trough, East China Sea (28°29.5'N, 127°59.2'E), 1073–1080 m. Habitat. Marine, benthic. Depth range. 1073–1080 m (Narahara et al. 2012). Feeding strategies. Scavenger taken in baited trap. Distribution. Pacific Ocean. Okinawa Trough, East China Sea (Narahara et al. 2012).

Nagada garagassi Lowry & Stoddart, 1995 Nagada garagassi Lowry & Stoddart, 1995: 147, figs 29, 30. Types. Holotype, female with non-setose oostegites, 5 mm, AM P.41596. Paratypes: 1 male, AM P.41597; 13 specimens, AM P.41598. Type locality. East from Planet Rock, Astrolabe Bay, Papua New Guinea (55.48’S 145º49.14’E), about 500 m depth. Habitat. Marine. Depth range. 500 m (Lowry & Stoddart 1995). Feeding strategies. Scavenger, taken in baited traps. Distribution. Papua New Guinea. Astrolabe Bay (Lowry & Stoddart 1995)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 44, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734

Stephonyx biscayensis (Chevreux, 1908) Euonyx biscayensis Chevreux, 1908: 1, fig. 1.—K.H. Barnard, 1916: 110.— Stephensen, 1923: 42.— Schellenberg, 1926a: 200.— Chevreux, 1927: 47.— Pirlot, 1933: 120 (key).— Chevreux, 1935: 7, pl. 5 fig. 2.—? K.H. Barnard, 1940: 514 (list).—J.L. Barnard, 1958: 91.— Belloc, 1960: 6.—? J.L. Barnard, 1961: 34, fig. 4.—? Griffiths, 1975: 144.—? Griffiths, 1976: 58, 100, fig. 32G.— Desbruyères et al., 1985: 236, 237.—? Ledoyer, 1986: 748, fig. 289.— Andres, 1987: 96 (table 2).— Costello et al., 1989: 32.— Barnard & Ingram, 1990: 2 (list), 3 (key).— Barnard & Karaman, 1991: 485.— Holmes et al., 1997: 186 (list).— Dauvin & Bellan-Santini, 2002: 315 (table 1). Stephonyx biscayensis.— Lowry & Stoddart, 1989: 522, figs 2, 3.— Palerud & Vader, 1991: 43.— Poupin, 1994: 16.— Lowry & Stoddart, 1997: 129, fig. 63.— Escobar-Briones & Winfield, 2003: 42.— Ortiz et al., 2007: 516.— Diffenthal & Horton, 2007: 40 (key).— Senna & Serejo, 2007: 13 (key).— Brown & Thatje, 2011: 1, figs 1–3.—Narahara, et al., 2012; 1486, 1506 (key), figs 7–11.— Corrigan et al., 2013: 10, fig. 5. Stephonyx sp. Paulmier, 1993: 29, pl. 34 fig. 1. Types. Syntypes, 10 specimens MOM. Female originally illustrated and described is lost (Ed Hendrycks pers. comm.). Type locality. Gulf of Gascony, Bay of Biscay, Northeast Atlantic Ocean (45°02'N 3°6'W), 1455 m depth. Habitat. Marine. Depth range. 494–1510 m (Lowry & Stoddart 1997; J.L. Barnard 1961). Feeding strategies. Scavenger (taken in baited traps). Remarks. Based on the key of Narahara et al. (2012) the records of J.L. Barnard (1961) and Ledoyer (1986) from the western Indian Ocean would key to S. biscayensis except for the posteroventral corner of epimeron 2 which has no spine. In addition the the cephalic lobe of S. biscayensis illustrated by both authors is rounded (triangular and apically subacute in the redescription of S. biscayensis of Lowry & Stoddart (1989), based on material from off Ireland). In fact neither of these characters were illustrated or described by Chevreux 1908. Distribution. North Atlantic Ocean. Bay of Biscay (Chevreux 1908); south-west of the Faeroes (Stephensen 1923); south-west of Ireland (Stephensen 1923; Lowry & Stoddart 1989); Hatton-Rockall Basin (Andres 1987); off the coast of northwest Africa (Chevreux 1927). South Atlantic Ocean.? Off Cape Point, South Africa (K.H. Barnard 1916; Schellenberg 1926a; Griffiths 1975). Indian Ocean.? Off Kenya (J.L. Barnard 1961);? Madagascar (Ledoyer 1986). Caribbean Sea. Off Puerto Rico and west of Basse Terre, Guadeloupe (Paulmier 1993; Poupin 1994; Lowry & Stoddart 1997). Gulf of Mexico. Off Florida, USA (Lowry & Stoddart 1997). East China Sea. Okinawa Trough and off Aguni-jima Island (Narahara, Tomikawa & Torigoe 2012)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 66-67, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Chevreux, E. (1908) Diagnoses d'amphipodes nouveaux provenant des campagnes de la Princesse-Alice dans l'Atlantique nord. Bulletin de l'Institut Oceanographique, Monaco, 117, 1 - 13.","Barnard, K. H. (1916) Contributions to the crustacean fauna of South Africa. 5. - The Amphipoda. Annals of the South African Museum, 15, 105 - 302, pls. 126 - 128.","Stephensen, K. (1923) Crustacea Malacostraca, V: (Amphipoda, I). Danish Ingolf-Expedition, 3, 1 - 100.","Schellenberg, A. (1926 a) Amphipoda 3: Die Gammariden der Deutschen Tiefsee-Expedition. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer \" Valdivia \" 1898 - 1899, 23, 193 - 243, pl. 195.","Chevreux, E. (1927) Malacostraces (suite). III. Crustaces Amphipodes. Expeditions Scientifiqes du \" Travailleur \" et du \" Talisman \" pendant les annees 1880, 1881, 1882, 1883, 9, 41 - 152, pls. 151 - 114. http: // dx. doi. org / 10.5962 / bhl. title. 13677","Pirlot, J. M. (1933) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II: - Les amphipodes de la mer profonde. 1. (Lysianassidae, Stegocephalidae, Stenothoidae, Pleustidae, Lepechinellidae). Siboga- Expeditie, Monographie, 33 c, 114 - 167.","Chevreux, E. (1935) Amphipodes provenant des campagnes du Prince Albert Ier de Monaco. Resultats des Campagnes Scientifiques Accomplies sur son Yacht par Albert Ier Prince Souverain de Monaco, 90, 1 - 214, pls. 211 - 216. http: // dx. doi. org / 10.5962 / bhl. title. 2169","Barnard, K. H. (1940) Contributions to the crustacean fauna of South Africa. 12. Further additions to the Tanaidacea, Isopoda, and Amphipoda, together with keys for the identification of the hitherto recorded marine and fresh-water species. Annals of the South African Museum, 32, 381 - 543.","Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.","Belloc, G. (1960) Catalogue des types d'amphipodes du Musee Oceanographique de Monaco. Bulletin de l'Institut Oceanographique, Monaco, 57, 1 - 28.","Barnard, J. L. (1961) Gammaridean Amphipoda from depths of 400 to 6000 meters. Galathea Report, 5, 23 - 128.","Griffiths, C. L. (1975) The Amphipoda of southern Africa. Part 5. The Gammaridea and Caprellidea of the Cape Province west of Cape Agulhas. Annals of the South African Museum, 67, 91 - 181.","Griffiths, C. L. (1976) Guide to the Benthic Marine Amphipods of Southern Africa. Trustees, South African Museum, Cape Town, 106 pp.","Desbruyeres, D., Geistdorfer, P., Ingram, C. L., Khripoudoff, A. & Lagardere, J. P. (1985) Repartition des populations de l'epibenthos carnivore. In: Laubier, L. & Monniot, C. (Eds.), Peuplements Profonds du Golfe de Gascogne. IFREMER, Paris, pp. 233 - 251.","Ledoyer, M. (1986) Crustaces Amphipodes Gammariens. Familles des Haustoriidae a Vitjazianidae. Faune de Madagascar, 59, 599 - 1112.","Andres, H. G. (1987) Die Gammaridea der 76. Reise von FFS \" Walther Herwig \" mit Beschreibung von Parachevreuxiella lobata gen. n. und sp. n. (Crustacea: Amphipoda). Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 84, 95 - 103.","Costello, M. J., Holmes, J. M. C., McGrath, D. & Myers, A. A. (1989) A review and catalogue of the Amphipoda (Crustacea) in Ireland. Irish Fisheries Investigations, Series B (Marine), 33, 1 - 70.","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Holmes, J. M. C., Costello, M. J. & Connor, D. W. (1997) Crustacea. In: Howson, C. M. & Picton, B. E. (Eds.), The species directory of the marine fauna and flora of the British Isles and surrounding seas. Ulster Museum Publication, Ulster Museum, Belfast, pp. 142 - 209.","Dauvin, J. C. & Bellan-Santini, D. (2002) Les crustaces amphipodes Gammaridea benthiques des cotes francaises metropolitaines: Bilan des connaissances. Crustaceana, 75, 299 - 340.","Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","Palerud, R. & Vader, W. (1991) Marine Amphipoda Gammaridea in north-east Atlantic and Norwegian Arctic. Tromura, Naturvitenskap, 68, 1 - 97.","Poupin, J. (1994) Faune marine profonde des Antilles Francaises. Recoltes du navire Polka faites en 1993. Collection Etudes et Theses. ORSTOM Editions, Paris, pp. 79.","Lowry, J. K. & Stoddart, H. E. (1997) Amphipoda Crustacea IV. Families Aristiidae, Cyphocarididae, Endevouridae, Lysianassidae, Scopelocheiridae, Uristidae. Memoirs of the Hourglass Cruises, 10, 1 - 148.","Escobar-Briones, E. & Winfield, I. (2003) Checklist of the Benthic Gammaridea and Caprellidea (Crustacea: Peracarida: Amphipoda) from the Gulf of Mexico Continental Shelf and Slope. Belgian Journal of Zoology, 133 (1), 37 - 44.","Ortiz, M., Martin, A. & Diaz, Y. J. (2007) Lista y referencias de los crustaceos anfipodos (Amphipoda: Gammaridea) del Atlantico occidental tropical. Revista de Biologia Tropical, 55 (2), 479 - 528. http: // dx. doi. org / 10.15517 / rbt. v 55 i 2.6026","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Brown, A. & Thatje, S. (2011) Respiratory response of the deep-sea amphipod Stephonyx biscayensis indicates bathymetric range limitation by temperature and hydrostatic pressure. PLOS ONE, 6 (12), e 28562. http: // dx. doi. org / 10.1371 / journal. pone. 0028562","Corrigan, L., Horton, T., Fotherby, H., White, T. A. & Hoelzel, A. R. (2013) Adaptive Evolution of Deep-Sea Amphipods from the Superfamily Lysianassoidea in the North Atlantic. Evolutionary Biology, 41 (1), 154 - 165.","Paulmier, G. (1993) Crustaces profonds captures aux casiers aux Antilles Francaises. Catalogue de l'Institute Francais de Recherche pour l'Exploitation de la Mer (IFREMER), Fevrier 1993, 1 - 34, pls. 31 - 33.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Euonyx coecus Pirlot, 1933 Euonyx coecus Pirlot, 1933: 116, figs 35–37.—J.L. Barnard, 1958: 91 (list).— Barnard & Ingram, 1990: 2 (list), 3 (key).— Barnard & Karaman, 1991: 485. Types. One female, about 7 mm (with small oostegites), ZMA. Type locality. Southern Gulf of Boni, south-eastern Sulawesi, Indonesia (5°40’7”S 120°45’5”E), 1158 m depth, coarse grey mud, brown surface layer. Habitat. Marine. Depth range. 1158 m (Pirlot 1933). Feeding strategies. Not recorded. Distribution. Indonesia. Gulf of Boni, Sulawesi (Pirlot 1933). ? Euonyx conicurus K.H. Barnard, 1955 Euonyx conicurus K.H. Barnard, 1955: 80, fig. 38.—J.L. Barnard, 1958: 91 (list).— Day et al., 1970: 50 (table).— Griffiths, 1974: 309.— Griffiths, 1975: 145.— Griffiths, 1976: 58 (key), fig. 32.— Barnard & Ingram, 1990: 2 (list), 3 (key).— Barnard & Karaman, 1991: 485. Types. SAM. One specimen, 6.5 mm. Type locality. Fish Hoek Bay (False Bay), South Africa, 15 m. Habitat. Marine. Depth range. 15–130 m (K.H. Barnard 1955; Griffiths 1974) Remarks. Since the mouthparts of this species have not been illustrated or described its generic status cannot be confirmed. It could be a Stephonyx. Distribution. South Africa. Port Elizabeth to False Bay (Griffiths 1975)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 21-22, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Pirlot, J. M. (1933) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II: - Les amphipodes de la mer profonde. 1. (Lysianassidae, Stegocephalidae, Stenothoidae, Pleustidae, Lepechinellidae). Siboga- Expeditie, Monographie, 33 c, 114 - 167.","Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Barnard, K. H. (1955) Additions to the fauna-list of South African Crustacea and Pycnogonida. Annals of the South African Museum, 43, 1 - 107.","Day, J. H., Field, J. G. & Penrith, M. J. (1970) The benthic fauna and fishes of False Bay, South Africa. Transactions of the Royal Society of South Africa, 39, 1 - 108.","Griffiths, C. L. (1974) The Amphipoda of southern Africa. Part 4. The Gammaridea and Caprellidea of the Cape Province east of Cape Agulhas. Annals of the South African Museum, 65, 251 - 336.","Griffiths, C. L. (1975) The Amphipoda of southern Africa. Part 5. The Gammaridea and Caprellidea of the Cape Province west of Cape Agulhas. Annals of the South African Museum, 67, 91 - 181.","Griffiths, C. L. (1976) Guide to the Benthic Marine Amphipods of Southern Africa. Trustees, South African Museum, Cape Town, 106 pp."]}

Kyska Shoemaker, 1964 (Fig. 23) Kyska Shoemaker, 1964: 391.—J.L. Barnard, 1969: 346.— Barnard & Karaman, 1991: 424 (key), 494. Type species. Kyska dalli Shoemaker, 1964, original designation Included species. Kyska includes one species: K. dalli Shoemaker, 1964. Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum forming cap covering callynophore. Antenna 2 with brush setae. Mandible molar a setose tongue. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate significantly shorter than outer plate. Gnathopod 1 chelate; coxa 1 large, about as long as coxa 2, subrectangular with concave anterior margin ; ischium short (length less than 2 × breadth); carpus compressed; propodus margins tapering distally. Uropod 2 inner ramus not constricted. Telson notched. Remarks. Only three uristid genera (Euonyx, Kyska and Stephonyx) have chelate first gnathopods. Unlike Kyska, Euonyx and Stephonyx both have reduced vestigial coxae on gnathopod 1. Based on the well developed coxa of gnathopod 1 with a concave anterior margin and a compressed carpus Kyska is similar to Abyssorchomene and Koroga. Kyska differs from both genera in the chelate first gnathopod, from Koroga in less well developed eyes and a deeply cleft telson (notched in Koroga) and from Abyssorchomene in the straight mandibular incisors (curved in Abyssorchomene) in the small setose molar and in the tapering margins of the gnathopod 1 propodus. Distribution. Arctic. Alaskan endemic., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 38, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Shoemaker, C. R. (1964) Seven new amphipods from the west coast of North America with notes on some unusual species. Proceedings of the United States National Museum, 115, 391 - 430.","Barnard, J. L. (1969) The families and genera of marine gammaridean Amphipoda. Bulletin of the United States National Museum, 271, 1 - 535. http: // dx. doi. org / 10.1163 / 156854082 x 00632","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367"]}

Euonyx xarifa sp. nov. (Figs 13–15) Types. Holotype, female, 10.7 mm, AM P.68882, east of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m, epibenthic sled, 22 August 1988, P.A. Hutchings et al., RV Franklin [FR0688-14]. Paratype, male, 8.5mm, AM P.68883, same collection details as holotype. Type locality. East of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m east of Cape York, Queensland, Australia (11°35.62’S 145°28.42’E), 1770–1863 m. Etymology. Named for the pearling lugger ‘Xarifa’ one of the fleet wrecked off Cape York (probably Thursday Island) during the severe cyclone Mahine on 4 March 1899; used as a noun in apposition. Description. Based on holotype, female, 10.7 mm, AM P.68882. Head lateral cephalic lobes small, rounded; eyes apparently absent. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore, 4-articulate, terminal article large, offset; primary flagellum with strong 2-field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae absent; flagellum short; calceoli absent. Labrum, epistome and upper lip separate. Mandible incisor very reduced, left and right slightly asymmetrical; molar an asetose flap; palp attached distally, article 2 with central bulge. Maxilla 1 outer plate setal-tooth 7 present, not cuspidate; palp distal margin with apical robust setae. Maxilliped outer plate without apical robust setae. Gnathopod 1 chelate; coxa vestigial, significantly shorter than coxa 2, subquadrate; basis sparsely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), longer than propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, slightly convex; dactylus simple. Gnathopod 2 propodus palm slightly acute. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin weakly or not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner subquadrate. Urosomite 1 not projecting over urosomite 2, with rounded boss. Uropod 2 inner ramus without constriction. Peduncle without dorsolateral flange; outer ramus article 2 short, without plumose setae on rami. Telson deeply cleft, or moderately cleft. Depth range. 1770–1863 m. Remarks. See remarks under E. chelatus. Distribution. Australia. Queensland.

Abyssorchomene De Broyer, 1984 (Fig. 1) Abyssorchomene De Broyer, 1984: 198.— Barnard & Karaman, 1991: 507 (in part).— Lowry & Stoddart 2003: 281 (catalogue). Type species. Orchomenopsis chevreuxi Stebbing, 1906, original designation. Included species. Abyssorchomene includes eleven species: A. abyssorum (Stebbing, 1888); A. charcoti (Chevreux, 1912); A. chevreuxi (Stebbing, 1906); A. distinctus (Birstein & M. Vinogradov, 1960); A. gerulicorbis (Shulenberger & Barnard, 1976); A. musculosus (Stebbing, 1888); A. nodimanus (Walker, 1903); A. pelagicus (Birstein & M. Vinogradov, 1960); A. plebs (Hurley, 1965); A. rossi (Walker, 1903); A. scotianensis (Andres, 1983). Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore. Antenna 2 with brush setae. Mandible molar setose with a triturating surface. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate slightly to significantly shorter than outer plate. Gnathopod 1 subchelate or parachelate; coxa 1 large, about as long as coxa 2, subrectangular with concave anterior margin or adze-shaped; ischium short (length less than 2 × breadth); carpus compressed; propodus margins subparallel. Uropod 2 inner ramus not constricted. Telson moderately to deeply cleft. Remarks. Abyssorchomene is most similar to Koroga. Both genera have subchelate first gnathopods with a compressed carpus. However, Abyssorchomene has a moderately to deeply cleft telson (notched in Koroga). Both genera are scavengers with wide-spread distributions. D’Udekem d’Acoz & Havermans (2012) include A. plebs and A. rossi in the tryphosine genus Pseudorchomene Schellenberg, 1926 based on molecular evidence. Abyssorchomene plebs and A. rossi are morphologically dissimilar to P. coatsi (Chilton, 1912), the type species of Pseudorchomene, Schellenberg, 1926, but very similar to species usually assigned to Abyssorchomene. D’Udekem d’Acoz & Havermans (2012) did not test the molecular affinities of the other ten species of Abyssorchomene against Pseudorchomene before moving these species. Transferring A. rossi and A. plebs to Pseudorchomene confounds the morphological concept of both genera. Therefore based on the maxilla 1 setal-tooth arrangement and the morphology of the first gnathopods we prefer to retain these species within Abyssorchomene until such time as affinities of the entire Abyssorchomene / Pseudorchomene complex have been tested. Abyssorchomene abyssorum Stebbing, 1888, A. gerulicorbis (Shulenberger & Barnard, 1976) and A. scotianensis (Andres, 1983) are extremely similar morphologically. The only character difference we see is the first coxa which is rectangular in A. gerulicorbis and subtlety adze-shaped in A. scotianensis. We leave them as separate species for the moment. The species recorded as A. abyssorum by Barnard & Ingram, 1990 and by Birstein & Vinogradov, 1960 from the tropical Pacific Ocean look more similar to each other than either does to the A. abyssorum of Stebbing, 1888 from the south-western Atlantic. Distribution. Cosmopolitan. Key to Abyssorchomene species [A. abyssorum, A. gerulicorbis and A. scotianensis are difficult to separate in this key] 1. Gnathopod 1 parachelate............................................................................... 2 - Gnathopod 1 subchelate................................................................................ 3 2. Gnathopod 1 coxa rectangular with straight anterior margin; ischium not enlarged; propodus palm slightly obtuse. Pereopod 7 basis posterior margin with distal concavity........................................................ A. charcoti - Gnathopod 1 coxa adze-shaped; ischium enlarged; propodus palm transverse. Pereopod 7 basis posterior margin entire.............................................................................................. A. nodimanus 3. Uropod 3 innerramusabout 2/3 aslongasouterramus.................................................. A. plebs - Uropod 3 inner ramus slightly shorter (reaching base of article 2) or subequal to outer ramus........................ 4 4. Epimeron 3 posteroventralcornersubquadrate.......................................................... A. rossi - Epimeron 3 posteroventralcornerbroadlyrounded.......................................................... 5 - Epimeron 3 posteroventralcornernarrowlyrounded........................................................ 6 5. Gnathopod 1 propodus palm convex............................................................. A. distinctus - Gnathopod 1 propodus palm straight........................................................... A. musculosus 6. Urosomite 1 with straight boss not projecting over urosomite 2....................................... A. pelagicus - Urosomite 1 withroundedbossslightlyprojectingoverurosomite 2............................................. 7 7. Gnathopod 1 coxa weakly adze-shaped. Uropod 3 inner ramus just reaching base of outer ramus article 2... A. scotianensis - Gnathopod 1 coxasubrectangular. Uropod 3 ramisubequalinlength........................................... 8 8. Gnathopod 2 palmstraight............................................................................. 9 - Gnathopod 2 palmexcavate........................................................................... 10 9. Maxilla 2 innerplatesignificantlyshorterthanouterplate................................................................................................. A. abyssorum (of Barnard & Ingram 1990, Birstein & Vinogradov 1960) - Maxilla 2 inner plate slightly shorter than outer plate............................... A. abyssorum (of Stebbing 1888) 10. Gnathopod 2 dactyluswithoutsetalbasket......................................................... A. chevreuxi - Gnathopod 2 dactyluswithsetalbasket......................................................... A. gerulicorbis, Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 6-8, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["De Broyer, C. (1984) Evolution du complexe Orchomene Boeck (Amphipoda Lysianassidae). Annales de la Societe Royale Zoologique de Belgique, 114, 197 - 198.","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.","Stebbing, T. R. R. (1906) Amphipoda. I. Gammaridea. Das Tierreich, 21, 1 - 806.","Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology, 29, 1 - 1737, pls. 1731 - 1210.","Chevreux, E. (1912) Deuxieme Expedition Dans L'antarctique, Dirigee Par Le Dr Charcot, 1908 - 1910. Diagnoses D'Amphipodes Nouveaux. Bulletin du Museum National d'Histoire Naturelle, Paris, 4, 1 - 12.","Shulenberger, E. & Barnard, J. L. (1976) Amphipods from an abyssal trap set in the North Pacific gyre. Crustaceana, 31, 241 - 258. http: // dx. doi. org / 10.1163 / 156854076 x 00035","Walker, A. O. (1903) Amphipoda of the ' Southern Cross' Antarctic Expedition. Journal of the Linnean Society of London, Zoology, 29 (187), 38 - 64, pls. 37 - 11.","Hurley, D. E. (1965) A re-description of some A. O. Walker types of \" Southern Cross \" Lysianassidae (Crustacea Amphipoda) from the Ross Sea. Transactions of the Royal Society of New Zealand, Zoology, 6, 155 - 181.","Andres, H. G. (1983) Die Gammaridea (Crustacea: Amphipoda) der Deutschen Antarktis-Expeditionen 1975 / 76 und 1977 / 78. 3. Lysianassidae. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 80, 183 - 220.","D'Udekem d'Acoz, C. & Havermans, C. (2012) Two new Pseudorchomene species from the Southern Ocean, with phylogenetic remarks on the genus and related species (Crustacea: Amphipoda: Lysianassoidea: Lysianassidae: Tryphosinae). Zootaxa, 3310, 1 - 50.","Chilton, C. (1912) The Amphipoda of the Scottish National Antarctic Expedition. Transactions of the Royal Society of Edinburgh, 48, 455 - 520, pls. 451, 452.","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Birstein, J. A. & Vinogradov, M. E. (1960) [Pelagic gammarids from the tropical Pacific Ocean]. Akademiya Nauk SSSR, Trudy Instituta Okeanologii, 34, 165 - 241. [in Russian]"]}

Gippsia Lowry & Stoddart 1995 (Fig. 17) Gippsia Lowry & Stoddart 1995a: 21.— Lowry & Stoddart 2003: 282 (catalogue). Type species. Gippsia jonesae Lowry & Stoddart, 1995, original designation. Included species. Gippsia includes 1 species: G. jonesae Lowry & Stoddart, 1995. Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore. Antenna 2 without brush setae. Mandible molar setose with reduced triturating surface. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate longer than outer plate. Gnathopod 1 weakly subchelate; coxa 1 large, subrectangular with concave anterior margin; ischium short (length less than 2 × breadth); carpus short (length 1 to 2 × breadth); propodus margins tapering distally. Uropod 2 inner ramus not constricted. Telson entire. Remarks. Based on the simple to weakly subchelate gnathopod 1 (a very weak palm occurs in Gippsia) and the entire telson Gippsia is similar to Nagada and Paralibrotus. Gippsia differs from all uristid genera except Ventiella, in having the inner plate of maxilla 2 longer than the outer plate. Distribution. Australia. Southeastern Australia., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 28, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Lowry, J. K. & Stoddart, H. E. (1995 a) New lysianassoid genera and species from south-eastern Australia (Crustacea: Amphipoda). Records of the Australian Museum, 47 (1), 7 - 25. http: // dx. doi. org / 10.3853 / j. 0067 - 1975.47.1995.5","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp."]}

Stephonyx pirloti (Sheard, 1938) (Figs 42–44) Euonyx normani.— Chilton, 1921: 52, figs 5a–d.— Pirlot, 1933: 120 (key).— Sheard, 1937: 19. Euonyx pirloti Sheard, 1938: 170, figs 1–3.—J.L. Barnard, 1958: 92.— Zeidler, 1986: 109.— Barnard & Ingram, 1990: 3 (key).— Barnard & Karaman, 1991: 485. Euonyx pirloti.— Springthorpe & Lowry, 1994: 28. Stephonyx pirloti.— Lowry & Stoddart, 1989: 521.— Lowry & Stoddart, 2003: 284.— Diffenthal & Horton, 2007: 39 (key).— Senna & Serejo, 2007: 13 (key).— Narahara et al., 2012: 1505 (key). Types. Syntypes, five specimens (one dissected), SAMA C2177; one microscope slide (lost) SAMA C2201. Type locality. Nepean Bay, Kangaroo Island, South Australia (~ 35°42'S 137°45'E). Additional material examined. New South Wales. 1 specimen, AM P.57649, north-east of Coffs Harbour (30°14.63’S 153°24.68’E), 199 m, baited trap, 12–13 August 1993, P.B. Berents, R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-882]; 5 specimens, AM P.63983; 320 specimens, AM P.44268; 1 specimen, AM P.63984, off Wollongong (34°31.48’S 151°13.22’E), 200 m, baited trap, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-946]; 628 specimens, AM P.44258, off Wollongong (34°31.48’S 151°13.22’E), 200 m, baited trap, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-944]; 87 specimens, AM P.43486, off Wollongong (34°31.48’S 151°13.22’E), 200 m, baited trap, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-945]; 446 specimens, AM P.44245; 446 specimens, AM P.44307, off Wollongong (34°31.48’S 151°13.22’E), 200 m, Globigerina ooze, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-964]; 439 specimens, AM P.46909, off Wollongong (34°32.02’S 151°13.0’E), 200 m, baited trap, 6–7 May 1993, P. Freewater & party, MV Robin E [NSW-781]; 2 specimens, AM P.44417, off Wollongong (34°33.02’S 151°16.53’E), 400 m, Globigerina ooze, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-803]; 1 female, AM P.96595; 1 male, AM P.96594, 1832 specimens, AM P.44231, off Wollongong (34°31.48’S 151°13.22’E), 200 m, Globigerina ooze, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-962]; 1 specimen, AM P.44429, off Wollongong (34°32.38’S 151°15.0’E), 300 m, Globigerina ooze, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-801]; 377 specimens, AM P.46928, off Wollongong (34°32.02’S 151°13.0’E), 200 m, baited trap, 6–7 May 1993, P. Freewater & party, MV Robin E [NSW-780]; 437 specimens, AM P.47037, off Wollongong (34°32.08’S 151°12.55’E), 200 m, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-797]; 1 specimen, AM P.51131, north-east of Coffs Harbour (30°10.88’S 153°32.22’E), 1000 m, baited trap, 12–13 August 1993, P.B. Berents, R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-877]; 1 specimen, AM P.85714, south-east of Port Stephens (32°52’S 152°32’E), 145 m, dredge, 6 December 1978, FRV Kapala [K78-26-07]; 367 specimens, AM P.47023, off Wollongong (34°32.08’S 151°12.55’E), 200 m, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-798]; 1 specimen, AM P.85715, east of The Entrance (33°22’S 152°04’E), 205 m, benthic trawl, 11 February 1986, FRV Kapala [K86-01- 04]; 59 specimens, AM P.43513, off Wollongong (34°31.48’S 151°13.22’E), 200 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-963]; 1 specimen, AM P.24235, east of Long Reef (33º44’S 151º22’E) 32 m, 1973, Australian Museum Shelf Benthic Survey. South Australia. 1 specimen, AM P.68511, Kangaroo Island, Penneshaw, 8 km off Hogg Point, (35°37’S 137°57’E), 25 m, trawl, 30 May 2001, W. Rumball, MRV Ngérin; 1 specimen, AM P.85719, Gulf St Vincent, 8–10 km off Semaphore (34°52'S 138°20'E), 9 m, 1925–1925, H.M. Hale [SA 74]; 1 specimen, AM P.85718, Investigator Strait (35°33'S 137°37'E), 50–80 m, J.C. Verco; 5 specimens, AM P.85709, Yorke Peninsula, Edithburgh Pier (35°05'S 137°45'E), 3 m, baited trap, 16 April 2008, T. Laperousaz; 2 specimens, AM P.85713, Gulf St Vincent, Marino (35°03'S 138°31'E), 1910, W.H. Baker [SA 79]; 2 specimens, SAMA C8034, Dangerous Reef, Spencer Gulf, South Australia, [approx. 34°49’S 136°12’E], dredged, K. Sheard; 1 specimen, SAMA C8035, 8 miles off Halletts Cove, Gulf St Vincent, South Australia [approx. 35°05’S 138°30’E], 30 m, A. T. trawl, 2-2.30 a.m., 14 April 1945, H.M. Hale & K. Sheard; 1 specimen, SAMA C8036, Whalers Bay, Thistle Island, South Australia [approx. 35°00’S 136°11’E], 7 fms [12.8 m], 3 March 1941, K. Sheard. Tasmania. 1 male, AM E.6521, Bass Strait, east coast of Flinders Island (40°00'S 148°30'E), 1909-1914, FIS Endeavour; 87 specimens, AM P.38829; 11 specimens, AM P.50876; 450 specimens, AM P.50877, mouth of Fortescue Bay (43°07.76’S 147°59.98’E), 50 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-386]; 549 specimens, AM P.51037, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-376]; 1 specimen, AM P.51224, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-393]; 1 specimen, AM P.57709, east of Fortescue Bay (43°09.36’S 148°13.6’E), 300 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-378]; 52 specimens, AM P.51015, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-356]; 17 specimens, AM P.50932, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-357]; 1 specimen, AM P.85717, off Babel Island (39°55'S 148°31'E), 25 m over a bottom depth of 51 m, horizontal plankton haul, 20 January 1939, CSIRO, FRV Warreen [29/39]; 8 specimens, AM P.51147, east of Fortescue Bay (43°09.36’S 148°13.6’E), 300 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-377]; 1 specimen, AM P.51139, east of Fortescue Bay (43°09.36’S 148°13.6’E), 300 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-359]; 2 specimens, AM P.51227, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-394]; 700 specimens, AM P.50891, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-390]; 771 specimens, AM P.51188; 41 specimens, AM P.51190, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-391]; 1820 specimens, AM P.51329, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-408]; 356 specimens, AM P.51315, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-409]; 2903 specimens, AM P.51033, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-372]; 11004 specimens, AM P.50821, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-354]; 3187 specimens, AM P.50866, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-371]; 188 specimens, AM P.51157, east of Fortescue Bay (43°06.7’S 148°13.6’E), 200 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-374]; 1 specimen, AM P.85712, Bass Strait, east of Flinders Island (40°01'S 148°02'E), m, FIS Endeavour, 1909-1914, FIS Endeavour; 67 specimens, AM P.46651, mouth of Fortescue Bay (43°07.76’S 147°59.98’E), 50 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-368]; 2 specimens, AM P.85711, north side of Cape Sorell (42°11.5’S 145°10.8’E), 13 m, baited trap, 27–28 April 1991, J.K. Lowry & S.J. Keable, Flying Scud [TAS-301]; 35 specimens, AM P.85716, Freycinet Peninsula, about 800 m east of Point Geographe (42°17.0'S 148°18.8'E), 45 m, baited trap, 30 April 1991 – 1 May 1991, J.K. Lowry & S.J. Keable, Flying Scud [TAS-337]; 13 specimens, AM P.50839, mouth of Fortescue Bay (43°07.76’S 147°59.98’E), 50 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-370]; 200 specimens, AM P.50915, mouth of Fortescue Bay (43°07.76’S 147°59.98’E), 50 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-405]; 1 specimen, AM P.85710, off the coast of Tasmania, Australia (42°00'S 146°45'E), 1909-1914, FIS Endeavour; 259 specimens, AM P.50884, mouth of Fortescue Bay (43°07.76’S 147°59.98’E), 50 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-387]; 9963 specimens, AM P.45772, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-353]; 511 specimens, AM P.45741, mouth of Fortescue Bay (43°07.76’S 147°59.98’E), 50 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-350]; 47 specimens, AM P.51394, mouth of Fortescue Bay (43°07.76’S 147°59.98’E), 50 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-406]; 86 specimens, AM P.46644, mouth of Fortescue Bay (43°07.76’S 147°59.98’E), 50 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-352]; 2 specimens, AM P.51167, east of Fortescue Bay (43°07.36’S 148°13.75’E), 400 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-380]; 2 specimens, AM P.51173, east of Fortescue Bay (43°07.36’S 148°13.75’E), 400 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-382]; 1 specimen, AM P.51181, east of Fortescue Bay (43°08.96’S 148°15.36’E), 1000 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-384]; 1 specimen, NMV J67769, 5 km north-east of Mistaken Cape, Maria Island, Tasmania (42º37.0’S 148º12.5’E), 100 m, fine muddy bryzoan, epibenthic sled, 23 April 1985, RV Challenger [MV TAS-31]; 2 specimens, NMV J67766, 25 km north-east of Deal Island, Tasmania, eastern Bass Strait, Australia (39°16.8'S 147°33.2'E), 57 m, medium sand, epibenthic sled, 18 November 1981, RV Tangaroa [BSS 174 S]; 1 specimen, NMV J67761, 9 km south-south-west of Cape Adansan, Three Hummock Island, central Bass Strait, Australia (40°30.9'S 144°56'E), 27 m, very coarse sand, epibenthic sled, 2 November 1980, M. Gomon & G.C.B. Poore, FRV Sarda [BSS 109 S]; 5 specimens, NMV J67762, 9 km south-south-west of Cape Adansan, Three Hummock Island, central Bass Strait, Australia (40°30.9'S 144°56'E), 27 m, very coarse sand, epibenthic sled, 2 November 1980, M. Gomon & G.C.B. Poore, FRV Sarda [BSS 109 S]. Victoria. 1 specimen, NMV J67767, south of Point Hicks (38°17.70'S 149°11.30'E), 400 m, coarse sand, gravel, mud, many sponges, WHOI epibenthic sled, 24 July 1986, M.F. Gomon et al., RV Franklin [SLOPE 40]; 1 specimen, NMV J7469, 51 km south-south-west of Cape Otway, western Bass Strait, Australia (39°16'S 143°17'E), 90 m, medium sand, dredge, 10 October 1980, G.C.B. Poore, HMAS Kimbla [BSS-73D]; 3 specimens, NMV J67764, 15 km east of Cape Wellington, Wilsons Promontory, Victoria, eastern Bass Strait, Australia (39º03.2'S 146º39.5'E), 55 m, muddy fine sand, epibenthic sled, 18 November 1981, R. Wilson, RV Tangaroa [BSS-179S]; 1 specimen, NMV J7446, 25 km west-south-west of Cape Otway, western Bass Strait, Australia (38°55'S 143°25'E), 67 m, coarse sand, dredge, G.C.B. Poore, 8 October 1980, HMAS Kimbla [BSS-53D]; 1 specimen, NMV J67763, 70 km south-west of Cape Otway, western Bass Strait, Australia (39°26.3'S 143°06.8'E), 115 m, sand, epibenthic sled, 21 November 1981, R. Wilson, RV Tangaroa [BSS-194S]. Western Australia. 5 specimens, AM P.78479, north-east of Dampier, drill platform, (19°46.28'S 115°20.03'E), 222 m, baited trap, 17 July 2008, H. Smith. Description. Based on female, 18.9 mm, AM P.96595. Head, lateral cephalic lobe rounded; eyes reniform. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, 10-articulate, terminal article not offset; primary flagellum with strong 2-field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae absent; flagellum long; calceoli absent. Labrum, epistome and upper lip fused, slightly concave proximally, with central bulge. Mandible molar setose with vestigial triturating surface; palp attached proximally, article 2 not broadened distally, article 3 blade-like. Maxilla 1 outer plate setal-tooth 7 present, cuspidate distally along inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with 3 long apical robust seta. Gnathopod 1 chelate; coxa reduced, significantly shorter than coxa 2, subquadrate; basis sparsely setose along anterior margin; ischium very long (length 4 × to 6 × breadth); carpus very long (length more than 4 × breadth), subequal in length to propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, straight; dactylus simple. Gnathopod 2 propodus palm transverse to slightly acute, straight. Pereopod 4 coxa with a welldeveloped posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner narrowly rounded. Urosomite 1 not projecting over urosomite 2, with anterodorsal notch and slightly rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with strong plumose setae on both rami. Telson deeply cleft; without dorsal robust setae; with 1 apical robust setae on each lobe. Sexually dimorphic characters. Based on male, 17.0 mm, AM P.96594. Antenna 1 flagellum article 1 longer than female, with strong 2-field callynophore, stronger than female; calceoli present. Antenna 2 flagellum calceoli present. Habitat. Marine. Depth range. 3–1000 m (this study). Feeding strategies. Scavenger, taken in baited traps. Remarks. Stephonyx pirloti is a distinctive species. It differs from other species in the genus by the epistome which is fused and by the long first article on the mandibular palp. The gnathopod 2 carpus, as illustrated by Sheard (1938) was about 3.5 × as long as the propodus. In material we have examined from Kangaroo Island, the type locality, the carpus is about 2.5 × as long as the propodus. In a selection of material we found a range from 2.2 × to 2.8 × the propodus, well outside the length ratio of Sheard. The most frequent length ratio is about 2.5. In all other respects our material corresponds with the material of Sheard 1938. Distribution. Australia. Coasts of New South Wales (this study); Flinders Islands, Victoria (Chilton 1921); Gulf St Vincent, Kangaroo Island South Australia (Sheard 1938; this study); Tasmania (this study); Western Australia (this study)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 68-74, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Sheard, K. (1938) The amphipod genera Euonyx, Syndexamine and Paradexamine. Records of the South Australian Museum, 6, 169 - 186.","Chilton, C. (1921) Report on the Amphipoda obtained by the F. I. S. \" Endeavour \" in Australian seas. Biological Results of the Fishing Experiments carried on by the F. I. S. \" Endeavour \", 1909 - 14, 5, 33 - 92.","Pirlot, J. M. (1933) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II: - Les amphipodes de la mer profonde. 1. (Lysianassidae, Stegocephalidae, Stenothoidae, Pleustidae, Lepechinellidae). Siboga- Expeditie, Monographie, 33 c, 114 - 167.","Sheard, K. (1937) A catalogue of Australian Gammaridea. Transactions and Proceedings of the Royal Society of South Australia, 61, 17 - 29.","Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.","Zeidler, W. (1986) Status of Australian crustacean type material described by K. Sheard. Crustaceana, 51, 109 - 111. http: // dx. doi. org / 10.1163 / 156854086 x 00133","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Springthorpe, R. T. & Lowry, J. K. (1994) Catalogue of crustacean type specimens in the Australian Museum: Malacostraca. Technical Reports of the Australian Museum, 11, 1 - 134. http: // dx. doi. org / 10.3853 / j. 1031 - 8062.11.1994.68","Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Galathella Barnard & Karaman 1987 (Fig. 16) Galathella Barnard & Karaman 1987: 866.— Barnard & Karaman 1991: 488.—Lowry & Stoddart, 1995: 12.— Lowry & Stoddart 2003: 281 (catalogue). Type species. Schisturella galatheae Dahl, 1959, original designation. Included species. Galathella includes 5 species: G. bassiana Lowry & Stoddart, 1995; G. galatheae (Dahl, 1959); G. latipes (Ledoyer, 1986); G. palana Lowry & Stoddart, 1995; G. solivagus Kilgallen, 2009. Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore. Antenna 2 without brush setae. Mandible molar a reduced column with triturating surface. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate slightly shorter to significantly shorter than outer plate. Gnathopod 1 weakly to strongly subchelate or simple; coxa 1 reduced or large, shorter than coxa 2, tapering; ischium short (length less than 2 × breadth) or long (length more than 2 × breadth); carpus long to very long (greater than 2 × breadth); propodus margins tapering distally. Uropod 2 inner ramus not constricted. Telson moderately to deeply cleft. Remarks. Galathella is the only uristid with gnathopod 1 coxa slightly shorter than coxa 2 and tapering distally, similar to Ventiella in which coxa 1 is more reduced and tapering. These genera differ mainly in maxilla 2 (inner plate longer than outer plate in Ventiella) and in the cleftness of the telson (moderately to deeply in Galathella and notched in Ventiella). Distribution. South-western Pacific Ocean: Kermadec Trench. Eastern Australia. Western Indian Ocean.

Abyssorchomene distinctus (Birstein & Vinogradov, 1960) Orchomene distinctus Birstein & Vinogradov, 1960: 191, fig. 10. Orchomene (Abyssorchomene) distinctus.— Barnard & Ingram, 1990: 22, figs 12–14.— Vinogradov, 1993: 43. Abyssorchomene distinctus.—? Thurston, 1990: 264 (ecology).— Lowry & Stoddart 2003: 281.— Jamieson, Kilgallen, Rowden, Fujii, Lorz, Kitazawa & Priede, 2011: 55, table 3, 58, table 6 (ecology).—Horton, Thurston & Duffy, 2013: 355, table 2 (ecology). Orchomene distinctus.— Barnard & Karaman, 1991: 508. Orchomenella distinctus.— Lowry & Stoddart 1994: 181. Types. Unknown. Type locality. Near Palau, western South Pacific Ocean (5°02'N 135°33’E) 4732 m, trawl 0–2000 m; East Pacific vent region 13°N, 2635 m. Material examined. 1 female, AM P.70533, east of Sydney, New South Wales, Australia (33°50.9’S 152°15.2’E), 3178–4860 m, Isaacs-Kidd midwater trawl, 26–27 April 1989, J. R. Paxton, NMAS Cook [JP 89-2]; 1 specimen, AM P.96583, Hill D 1, south-southeast of South East Cape (44°23.4'S 147°16.2'E), 1942 m, baited trap, 31 January 1997, CSIRO party on FRV Southern Surveyor, FRV Southern Surveyor [SS01/97/65]. Diagnostic description. Mandible molar setose with triturating surface. Maxilla 2 inner plate significantly shorter than outer plate. Gnathopod 1 subchelate; coxa 1 large, about as long as coxa 2, subtriangular, adze-shaped; ischium not enlarged; propodus margins subparallel; palm transverse, slightly convex. Gnathopod 2 subchelate; palm transverse, margin sinusoidal. Pereopod 7 basis tapering distally. Epimeron 3 posteroventral corner broadly rounded . Telson moderately cleft. Remarks. Abyssorchomene distinctus has a broadly rounded posteroventral corner on epimeron 3 such as A. charcoti, A. musculosus and A. nodimanus. Gnathopod 1 is subchelate in A. distinctus and A. musculosus (parachelate in A. charcoti and A. nodimanus). There is little difference between A. distinctus and A. musculosus. The palm of gnathopod 1 is slightly convex in A. distinctus (straight in A. musculosus) and the setal-teeth on maxilla 1 appear to be more slender, but this could be the angle of the illustration. In other respects they appear to be the same. Depth range. 2635–5173 m (Barnard & Ingram 1990, Jamieson et al. 2011). Distribution. Pacific Ocean: Near Palau (5°02'N 135°33’E) (Birstein & Vinogradov 1960); East Pacific vent region 13°N (Barnard & Ingram 1990); Loyalty Islands (Lowry & Stoddart 1994); Kermadec Trench (Jamieson et al. 2011). North Atlantic Ocean. Cape Verde Plain (Thurston 1990)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 8-9, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Birstein, J. A. & Vinogradov, M. E. (1960) [Pelagic gammarids from the tropical Pacific Ocean]. Akademiya Nauk SSSR, Trudy Instituta Okeanologii, 34, 165 - 241. [in Russian]","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Vinogradov, G. M. (1993) [Amphipods (Crustacea) from hydrothermal vents of the eastern Pacific.] Zoologichesky Zhurna, 72 (2), 40 - 53. [in Russian]","Thurston, M. H. (1990) Abyssal necrophagous amphipods (Crustacea: Amphipoda) in the northeast and tropical Atlantic Ocean. Progress in Oceanography, 24, 257 - 274. http: // dx. doi. org / 10.1016 / 0079 - 6611 (90) 90036 - 2","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.","Jamieson, A. J., Kilgallen, N. M., Rowden, A. A., Fujii, T., Lorz, A. - N., Kitazawa, K. & Priede, I. G. (2011) Bait-attending fauna of the Kermadec Trench, SW Pacific Ocean: Evidence for an ecotone across the abyssal - hadal transition zone. Deep-Sea Research I, 58 (2011), 49 - 62. http: // dx. doi. org / 10.1016 / j. dsr. 2010.11.003","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Lowry, J. K. & Stoddart, H. E. (1994) Crustacea Amphipoda, Lysianassoids from the tropical western South Pacific Ocean. In: Crosnier, A. (Ed.), Resultats des Campagnes MUSORSTOM. Vol. 12. Memoires de Museum National d'Histoire Naturelle, 161, 127 - 223."]}

Parschisturella martrudan sp. nov. (Figs 30–32) Types. Holotype, female, 12.0 mm, AM P.69042, east of Broken Bay, New South Wales, Australia (33°37'S 152°04'E to 33°39’S 152°02’E), 896–923 m, dredge, 10 December 1980, R. T. Springthorpe, FRV Kapala [K80-20- 09]. Paratypes: 1 male, 10.2 mm, AM P.69044, north-east of Port Jackson, New South Wales, Australia (33°41’S 152°00’E to 33°44’S 151°57’E), 820–888 m, beam trawl, 11 February 1986, R. T. Springthorpe, FRV Kapala [K86-01-07]; 1 female, 12.8 mm, AM P.69045, east of Broken Bay, New South Wales, Australia (33°30’S 152°09’E to 33°33’S 152°11’E), 922–1015 m, beam trawl, 12 February 1986, R. T. Springthorpe, FRV Kapala [K86-01-08]. Type locality. East of Broken Bay, New South Wales, Australia (33°37'S 152°04'E to 33°39’S 152°02’E), 896–923 m depth. Additional material described. New South Wales. 1 specimen, AM P.44445, off Wollongong (34°32.25'S 151°15.16'E), 300 m, baited trap, 6 May 1993 – 7 May 1993, P. Freewater & party, MV Robin E [NSW-782]; 3 specimens, AM P.69041, east of Broken Bay (33°31’S 152°08’E to 33°33’S 152°07’E), 914 m, 2.5 m sled dredge, 10 December 1980, R. T. Springthorpe, FRV Kapala [K80-20-08]; 2 females, AM P.69043, east of Broken Bay (33°37’S 152°04’E to 33°39’S 152°02’E), 896–923 m, dredge, 10 December 1980, R. T. Springthorpe, FRV Kapala [K80-20-09]; 1 male, AM P.69046, east of Broken Bay (33°30’S 152°09’E to 33°33’S 152°11’E), 922–1015 m, beam trawl, 12 February 1986, R. T. Springthorpe, FRV Kapala [K86-01-08]; 1 specimen, AM P.69047, east of Broken Bay (33°30’S 152°12’E to 33°33’S 152°09’E), 1053–1066 m, beam trawl, 12 February 1986, R. T. Springthorpe, FRV Kapala [K86-01-10]. Tasmania. 16 specimens, AM P.51146; 8 specimens, AM P.51164, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-365 & TAS-367]; 539 specimens, AM P.51176; 503 specimens, AM P.51179, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 17–18 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-383 & TAS-384]; 5 specimens, AM P.51310; 10 specimens, AM P.51313; 41 specimens, AM P.51381; 180 specimens, AM P.57977, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-401, TAS-403 & TAS-422-423]; 43 specimens, AM P.51357, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-419]; 315 specimens, AM P.51388; 1 specimen, AM P.56090, east of Fortescue Bay (43°08.97’S 148°15.37’E), 1000 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-421]; many specimens, AM P.73705, 76.8km south-south-east of South East Cape, Main Pedra Hill (44°15.6'S 147°07.8'E), 1312 m, baited trap, 21–24 January 1997, CSIRO party, FRV Southern Surveyor [SS01/97/ 08]. 4 specimens, NMV J67753, 48 km east-north-east of Cape Tourville (42°00.25'S 148°43.55'E to 41°57.77'S 148°42.08'E), 1264– 1130 m, gravel with lumps of sandy mud aggregate, WHOI epibenthic sled, 30 October 1988, G.C.B. Poore et al., RV Franklin [SLOPE 81]; 19 specimens, NMV J67754, off Freycinet Peninsula (42°2.20 'S 148°38.70'E), 800 m, coarse shelly sand, WHOI epibenthic sled, 27 July 1986, M.F. Gomon et al., RV Franklin [SLOPE 45]. Victoria. 2 specimens, NMV J67755, south of Point Hicks (38°19.60'S 149°24.30'E), 930 m, rock, rubble, clay, sand, biogenic sediment, WHOI epibenthic sled, 23 July 1986, M.F. Gomon et al., RV Franklin [SLOPE 33]. Etymology. Named for the beautiful crayfishing boat MV Martrudan which collected many of the amphipods used in this and other studies of Australian lysianassoid amphipods; used as a noun in apposition. Description. Based on holotype, female, 12.0 mm, AM P.69042. Head, lateral cephalic lobes subtriangular, apically subacute. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, 5-articulate, terminal article not offset; primary flagellum with strong 1-field callynophore; robust setae absent from proximal articles; calceoli absent. Antenna 2 peduncular article 3 short, articles 3 to 5 not enlarged, brush setae absent; flagellum short; calceoli absent. Labrum, epistome and upper lip separate; epistome less produced than upper lip, straight; upper lip produced, strongly acute apically. Mandible incisor large, left and right symmetrical; molar with asymmetrically reduced column, proximally setose, distally triturating; palp attached about midway, article 2 margins subparallel, article 3 blade-like. Maxilla 1 outer plate setal-tooth 7 present, left and right symmetrical, cuspidate distally along inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with one slender and one broad apical robust setae. Gnathopod 1 simple; coxa large, about as long as coxa 2, subrectangular with straight anterior margin; basis moderately to densely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), slightly longer than propodus, without posterior lobe; propodus margins tapering distally; dactylus simple. Gnathopod 2 propodus palm transverse, dactylus distinctly shorter than palm. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis about as long as broad, posterior margin weakly or not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner acutely produced, forming weak spine. Urosomite 1 not projecting over urosomite 2, dorsally rounded. Uropod 2 inner ramus with slight constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with few plumose setae on inner ramus. Telson moderately cleft, without dorsal robust setae, with 2 apical robust setae on each lobe. Sexually dimorphic characters. Based on paratype male, 10.2 mm, AM P.69044. Antenna 1 primary flagellum with strong 2-field callynophore; robust setae absent from proximal articles; calceoli present. Antenna peduncular brush setae present; calceoli present. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with plumose setae on both rami. Depth range. 820–1312 m. Remarks. Parschisturella martrudan and P. simplex appear to be the only species with truly simple first gnathopods. In Parschisturella martrudan the cusps on the medial margin of setal-tooth 7 are distal in P. martrudan (along most of the medial margin in P. simplex); the gnathopod 2 dactylus is shorter than the palm in P. martrudan (fitting the palm in P. simplex); the dorsal margin of urosomite 1 is evenly rounded in P. martrudan (straight in P. simplex) and the telson is moderately cleft (deeply cleft in P. simplex). Distribution. Australia. New South Wales: east of Broken Bay; off Wollongong. Tasmania: east of Fortescue Bay; south-south-east of South East Cape, Main Pedra Hill; east-north-east of Cape Tourville. Victoria: south of Point Hicks.

Stephonyx rafaeli sp. nov. (Figs 45–47) Types. Holotype, female, 34.0 mm, AM P.96585, off Wollongong, New South Wales, Australia (32°32.4’S 151°22.8’E), 1000 m, baited trap, 28 March 1994 – 29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-971]. Paratype, male, 26.4 mm, AM P.96586, same collection details as holotype. Type locality. Off Wollongong, New South Wales, Australia (32°32.4’S 151°22.8’E), 1000 m depth. Etymology. Named for the son of the first author on the occasion of his first birthday, 21 January 2014. Additional material examined. New South Wales. 273 specimens, AM P.43443, off Wollongong (34°32.4'S 151°22.8'E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-971]; 89 specimens, AM P.43451, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-972]; 1 specimen, AM P.49816, north-east of Coffs Harbour (30°10.88’S 153°32.22’E), 1000 m, baited trap, 12–13 August 1993, P.B. Berents, R.T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-876]; 26 specimens, AM P.44378, off Wollongong (34°33.42’S 151°21.35’E), 1000 m, baited trap, 6–7 May 1993, P. Freewater & party, MV Robin E [NSW-789]; 193 specimens, AM P.43434, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-973]; 2 specimens, AM P.88939, east of Shoalhaven Heads (34°53'S 151°15'E to 34°56'S 151°13'E), 1079 m, trawl, 26 October 1983, FRV Kapala, FRV Kapala [K83-14-06]; 1 specimen, AM P.48123, north-east of Coffs Harbour (30°10.93’ S 153°32.26’E), 963 m, baited trap, 11–12 August 1993, P.B. Berents, R.T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-863]; 242 specimens, AM P.43426, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-953]; 173 specimens, AM P.43422, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-954]; 45 specimens, AM P.43431, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-955]; 233 specimens, AM P.44386, off Wollongong (34°33.22’S 151°21.4’E), 1000 m, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-808]; 18 specimens, AM P.44369, off Wollongong (34°33.42’S 151°21.35’E), 1000 m, baited trap, 6–7 May 1993, P. Freewater & party, MV Robin E [NSW-788]; 3 specimens, AM P.43366, north-east of Coffs Harbour (30°10.93’ S 153°32.26’E), 1000 m, baited trap, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-1000]. Queensland. 1 specimen, AM P.57599, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 6–7 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-930/SEAS]. Description. Based on holotype, female, 34.0 mm, AM P. 96585. Head, lateral cephalic lobe rounded; eyes lageniform. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum with an elongate article 1 (at least twice as long as article 2) partially covering callynophore; 10-articulate, terminal article not offset; primary flagellum with strong 2-field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae absent; flagellum short; calceoli absent. Labrum, epistome and upper lip separate; epistome less produced than upper lip, broadly rounded; upper lip slightly produced, rounded apically. Mandible molar with asymmetrically reduced column, proximally setose, distally triturating; palp attached about midway, article 2 not broadened distally, article 3 blade-like. Maxilla 1 outer plate setal-tooth 7 present, cuspidate along most of inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with 5 long, slender apical robust setae. Gnathopod 1 chelate; coxa reduced, significantly shorter than coxa 2, subquadrate; basis moderately setose along anterior margin; ischium very long (length 4 × to 6 × breadth); carpus very long (length more than 4 × breadth), slightly longer than propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, slightly concave; dactylus simple. Gnathopod 2 propodus palm transverse, straight. Pereopod 4 coxa with a welldeveloped posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner appearing subquadrate, forming a minute spine. Urosomite 1 not projecting over urosomite 2, with anterodorsal notch and slightly rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with strong plumose setae on both rami. Telson deeply cleft, with dorsal robust setae, with 2 apical robust setae on each lobe. Sexually dimorphic characters. Based on paratype, male, 26.4 mm, AM P.96586. Antenna 1 flagellum with very strong 1-field callynophore, calceoli present. Antenna 2 peduncle articles 3–4 with brush setae; calceoli present. Depth range. 963 – 1079 m. Remarks. Based on the keys in Diffenthal and Horton (2007) and Narahara et al. (2012) Stephonyx rafaeli is similar to S. biscayensis. In S. rafaeli the lateral cephalic lobe is apically rounded (apically acute in S. biscayensis), the carpus of the first gnathopod is longer than the propodus (subequal in S. biscayensis), the palm of gnathopod 2 is transverse (slightly acute in S. biscayensis) and the carpus of gnathopod 2 is much shorter in S. rafaeli. Distribution. Australia. Off the east coast from Flynn Reef, Queensland, to Shoalhaven Heads, New South Wales., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 74-75, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Onisimus Boeck, 1871 (Fig. 27) Onisimus Boeck, 1871: 111.— Stebbing 1906: 25.—Schellenberg 1927: 659.— Stephensen 1929: 53.— Gurjanova 1951: 161.—J.L. Barnard 1969: 352.— Barnard & Karaman 1991: 506.— Lowry & Stoddart, 1993: 168.—Vader, Johnsen & Berge, 2005: 2. Onesimus Boeck, 1876: 161 (invalid emendationof Onisimus Boeck, 1871).—G.O. Sars 1891: 104. Pseudalibrotus Della Valle, 1893: 798.— Stebbing 1906.—33.—Schellenberg 1927: 671.— Stephensen 1929: 55 (type species: Anonyx litoralis Boeck, 1871, monotypy). Alibrotus Sars, 1891: 101. Paronesimus Stebbing, 1894: 14.— Stebbing 1906: 43.— Gurjanova 1951: 196.— Barnard 1969: 357.— Barnard & Karaman 1991: 516 (type species: Paronesimus barentsi Stebbing, 1894, monotypy). Boeckosimus J.L. Barnard, 1969: 330.— Barnard & Karaman 1991: 470 (type species: Anonyx edwardsii Krøyer, 1846, original designation). Type species. Anonyx litoralis Krøyer, 1845, selected by Boeck, 1876. Included species. Onisimus includes 26 species: O. abyssi Oldevig, 1959; O. affinis Hansen, 1887; O. barentsi (Stebbing, 1894); O. birulai (Gurjanova, 1929b); O. botkini Birula,1897; O. brevicaudatus Hansen, 1887; O. caspius (G.O. Sars, 1896); O. caricus Hansen, 1887; O. derjugini (Gurjanova, 1929a); O. dubius Schellenberg, 1935 b; O. edwardsii Krøyer, 1846; O. glacialis (G.O. Sars, 1900); O. krassini Gurjanova, 1951); O. leucopis G.O. Sars, 1879; O. litoralis (Krøyer, 1845); O. nanseni (G.O. Sars, 1900); O. normani G.O. Sars, 1891; O. platyceras (G.O. Sars, 1896); O. plautus Krøyer, 1845; O. punctatus (Bate, 1862); O. sextonae Chevreux, 1926; O. sibiricus Brüggen, 1909; O. simus Gurjanova, 1962; O. turgidus G.O. Sars, 1879; O. uschakovi (Gurjanova, 1933); O. zenkevitchi Mednikov, 1960. Nomina nuda. Onisimus abyssicola (Stuxberg, 1880); O. crassini (Gorbunov, 1946); O. vorax (Stuxberg, 1880); O. zebra (Stuxberg, 1880). Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum forming cap covering callynophore. Antenna 2 without brush setae. Mandible molar a column with fully triturating surface. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate significantly shorter than outer plate. Gnathopod 1 subchelate; coxa 1 large, about as long as coxa 2, subrectangular with concave anterior margin ; ischium short (length less than 2 × breadth); carpus short (length 1 to 2 × breadth); propodus margins slightly tapering distally. Uropod 2 inner ramus with or without constriction. Telson entire to moderately cleft. Remarks. Based on the morphology of gnathopod 1 Onisimus and Anonyx are very similar. Onisimus retains the triturating molar characteristic of tryphosine amphipods while Anonyx has a derived setose tongue., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 45, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Boeck, A. (1871) Crustacea Amphipoda borealia et arctica. Forhandlinger i Videnskabs-Selskabet i Christiania, 1870, 81 - 280, i - viii. [index] http: // dx. doi. org / 10.5962 / bhl. title. 2056","Stebbing, T. R. R. (1906) Amphipoda. I. Gammaridea. Das Tierreich, 21, 1 - 806.","Stephensen, K. (1929) Amphipoda. Die Tierwelt der Nord- und Ostsee, 14, 1 - 188.","Gurjanova, E. F. (1951) Amphipods of the seas of the USSR and surrounding waters (Amphipoda-Gammaridea). Akademiya Nauk SSSR, Opredeliteli po Faune SSSR, 41, 1 - 1029.","Barnard, J. L. (1969) The families and genera of marine gammaridean Amphipoda. Bulletin of the United States National Museum, 271, 1 - 535. http: // dx. doi. org / 10.1163 / 156854082 x 00632","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Lowry, J. K. & Stoddart, H. E. (1993) The Onisimus problem (Crustacea, Amphipoda, Lysianassoidea). Zoologica Scripta, 22, 167 - 181. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1993. tb 00349. x","Boeck, A. (1876) De Skandinaviske og Arktiske Amphipoder. Part 2. A. W. Brogger, Christiania, pp. 1 - 713, pls. 168 - 132. http: // dx. doi. org / 10.5962 / bhl. title. 10131","Sars, G. O. (1891) An Account of the Crustacea of Norway, with Short Descriptions and Figures of all the Species. Vol. I. Amphipoda. Parts 4 - 9. Alb. Cammermeyer, Christiana, 144 pp., 48 pls. [pp. 69 - 212, pls. 225 - 272]","Della Valle, A. (1893) Gammarini del Golfo di Napoli. Fauna und Flora des Golfes von Neapel, 20, 1 - 948, pls. 941 - 961. http: // dx. doi. org / 10.5962 / bhl. title. 3710","Stebbing, T. R. R. (1894) The Amphipoda collected during the voyages of the Willem Barents in the Arctic Seas in the years 1880 - 1884. Bijdragen tot de Dierkunde, 17, 1 - 48, pls. 41 - 47.","Kroyer, H. N. (1846) Atlas des Crustaces. Voyages de la commission scientifique du nord; en Scandinavie, en Laponie, au Spitzberg et aux Fero, pendant les annees 1838 - 1840, sur la corvette la Recherche, commandee par M. Fabvre. In: Voyages de la commission scientifique du nord; en Scandinavie, en Laponie, au Spitzberg et aux Fero, pendant les annees 1838 - 1840, sur la corvette la Recherche, commandee par M. Fabvre. Paul Gaimard, Paris, pp. 10, 11, 13 - 20, 22, 23.","Kroyer, H. N. (1845) Karcinologiske Bidrag. Naturhistorisk Tidsskrift, Series 2, 1, 283 - 345, pls. 281 - 283; 403; 453 - 638, pls. 286, 287.","Oldevig, H. (1959) Arctic, subarctic and Scandinavian amphipods in the collections of the Swedish Natural History Museum in Stockholm. Goteborgs Kungliga Vetenskaps- och Vitterhets-Samhalles Handlingar, Series B, 8, 1 - 132, plates 1 - 134.","Hansen, H. J. (1887) Oversigt over de paa Dijmphna-Togtet indsamlede Krebsdyr. In: Lutken, C. F. (Ed.), Dijmphna-Togtets Zoologisk-botaniske Ubdytte. Kjobenhavn, pp. 183 - 286, pls. 120 - 124.","Gurjanova, E. F. (1929 b) Neue Formen arktischer Isopoden und Amphipoden. Zoologischer Anzeiger, 81, 309 - 317, 8 figs. [not seen]","Birula, A. A. (1897) Recherches sur la biologie et zoogeographie, principalement des mers russes. II. Hydrozoaires, polychetes et crustaces, recueillis par le Dr. A. Botkine en 1895 dans les golfes du Enisei et de l'Obi. Annuaire du Musee Zoologique de l'Academie Imperiale des Sciences de St. Petersbourg, 2, 78 - 116, pls. 119, 110.","Sars, G. O. (1896) Crustacea Caspia. Contributions to the knowledge of the carcinological fauna of the Caspian Sea. Amphipoda. Supplement. Bulletin de l'Academie Imperiale des Sciences de St. - Petersbourg, Series 5, 4, 421 - 489, pls. 421 - 412.","Gurjanova, E. F. (1929 a) On the fauna of Crustacea Malacostraca of the Barents Sea, White Sea and Kara Sea. Travaux de la Societe des Naturalistes de Leningrad, 59, 29 - 46, 7 figs. [in Russian]","Schellenberg, A. (1935) Die Amphipoden der Norwegischen Expeditionen nach Ost-Gronland in den Jahren 1929, 1930, 1931 und 1932. Skrifter om Svalbard og Ishavet, Oslo, 66, 9 - 39.","Sars, G. O. (1900) Crustacea. The Norwegian North Polar Expedition 1893 - 1896. Scientific Research, 1 (5), 137 pp., 36 pls.","Sars, G. O. (1879) Crustacea et Pycnogonida nova in itinere 2 do et 3 tio expeditionis Norvegicae anno 1877 & 78 collecta (Prodromus descriptionis). Archiv for Mathematik og Naturvidenskab, Kristiania, 4, 427 - 476.","Bate, C. Spence (1862) Catalogue of the specimens of Amphipodous Crustacea in the collection of the British Museum. Printed by order of the Trustees [by Taylor and Francis], London, 399 pp. http: // dx. doi. org / 10.5962 / bhl. title. 20901","Chevreux, E. (1926) Diagnoses d'amphipodes nouveaux provenant des campagnes de la \" Princesse-Alice \", dans l'Atlantique et dans l'Ocean Arctique. Lysianassidae. Bulletin de l'Institut Oceanographique, Monaco, 475, 1 - 12.","Bruggen, E. (1909) Beitrage zur Kenntnis der Amphipoden-Fauna der russichen Arctis. Memoirs of the Academy of Science, St- Petersbourg, Series 8, 18, 1 - 57.","Gurjanova, E. F. (1962) Amphipods of the northern part of the Pacific Ocean (Amphipoda-Gammaridea). Part 1. Akademiya Nauk SSSR, Opredeliteli po Faune SSSR, 74, 1 - 440.","Gurjanova, E. F. (1933) Zur Amphipodenfauna des Karischen Meeres. Zoologischer Anzeiger, 103, 119 - 128.","Mednikov, B. M. (1960) [Review of the genus Pseudalibrotus Della-Valle (Amphipoda) in marine waters of the far east]. Biologicheskie Nauki, Moskva, 3, 10 - 13.","Stuxberg, A. (1880) Evertebratfaunan i Sibiriens Ishaf. Forelopande studies grundade pa de zoologiska undersokningarna under Prof. A. E. Nordenskiolds Ishafs-expedition 1878 - 79. Bihang till Kunliga Svenska Vetenskaps-Akademiens Handlingar, 5, 1 - 76.","Gorbunov, G. (1946) Bottom life of the Novosiberian shoalwaters and the central part of the Arctic Ocean. Works of Drifting Ice Expedition in the Central Arctic Ocean in Ice Breaking Steamer \" T. Sedov \", pp. 30 - 128, 121 plate."]}

Stephonyx arabiensis Diffenthal & Horton, 2007 (Figs 40–41) Stephonyx arabiensis Diffenthal & Horton, 2007: 33, figs 1–4.— Narahara et al., 2012: 1505 (key).— Corrigan et al., 2013: fig. 5. Types. Holotype female, 26.7 mm, NHM 2007.799. Paratypes: male, 24.9 mm, NHM 2007.800; 6 large mature females, NHM 2007.801–806; 31 males, NHM 2007.807–816; 14 immature females, NHM 2007.817–826; 14 juveniles, NHM 2007.827–836. Type locality. Off the coast of Pakistan in the northern Arabian Sea (22º51.067'N 65º59.916'E), 1864 m depth, mean bottom temperature = 3.53ºC. Material examined. New South Wales. 1 specimen, AM P.96589, northeast of Coffs Harbour (30º10.88’S 153º32.22’E), 1000 m, baited trap, 12–13 August 1993, P.B Berents & R. T. Springthorpe, MV Cheryl Lee [NSW-877]; 2 specimens, AM P.96590, off Wollongong (34º32.4’S 151º22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-972]; 4 specimens, AM P.96591, off Wollongong (34º32.4’S 151º22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-971]; 7 specimens, AM P.96592, off Wollongong (34º32.4’S 151º22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-973]; 7 juveniles, AM P.48101, north-east of Coffs Harbour (30°10.93’S 153°32.26’E), 963 m, baited trap, 11–12 August 1993, P.B. Berents, R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-862]; 2 specimens, AM P.52661; 2 specimens, AM P.49815, north-east of Coffs Harbour (30°10.88’S 153°32.22’E), 1000 m, baited trap, 12–13 August 1993, P.B. Berents, R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-876]; 1 specimen, AM P.43430, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, muddy sand, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-953]; 9 specimens, AM P.43496, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, Globigerina ooze, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-954]; 3 specimens, AM P.43446, off Wollongong (34°32.4’S 151°22.8’E), 1000 m, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-971]; 15 specimens, AM P.43372, north-east of Coffs Harbour (30°10.93’S 153°32.26’E), 1000 m, baited trap, Globigerina ooze, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-1000]; 1 specimen, AM P.50071, north-east of Coffs Harbour (30°10.93’S 153°32.26’E), 1000 m, baited trap, 9–10 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Anne [NSW-1021]; 6 specimens, AM P.50080, north-east of Coffs Harbour (30°10.93’S 153°32.26’E), 1000 m, baited trap, 9–10 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-1022]. Queensland. Male 22.7 mm, AM P.96587, 2 specimens, 8.1–12.5 mm, AM P.96588, east of Flynn Reef, Queensland, Australia (16º37.82’S 146º23.08’E), 1000 m, baited trap, 6–7 June 1993, J.K. Lowry & P. Freewater, RV Sunbird [QLD-931]; 30 specimens, AM P.96593, off Flynn Reef (16º37’S 146º23’E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry & P. Freewater, RV Sunbird [QLD-950]; 6 specimens, AM P.50235, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 6–7 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-931/ SEAS]; 6 specimens, AM P.50244; 4 specimens, AM P.57607, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 6–7 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-932/ SEAS]; 11 specimens, AM P.50297; 3 specimens, AM P.57614, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-949/ SEAS]; 3 specimens, AM P.58069, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-950/ SEAS]; 2 specimens, AM P.57611; 2 specimens, AM P.49520, east of Flynn Reef (16°37.82’S 146°23.08’E), 1000 m, baited trap, 7–8 June 1993, J.K. Lowry, P. Freewater & W. Vader, RV Sunbird [QLD-948/ SEAS]; 6 specimens, AM P.47889, due east of Mooloolaba (26°36.23’S 153°50.23’E), 1006 m, baited trap, 2–3 August 1994, J.K. Lowry & K. Dempsey, MV Capricorn I [QLD-1140]. Tasmania. Many specimens, AM P.73709, Hill V, south-southeast of South East Cape (44°23.6’S 147°10.7’E), 1400 m, baited trap, 30 January 1997, CSIRO party on FRV Southern Surveyor, [SS01/97/61]. Description. Based on male, 22.7 mm, AM P.96587. Head, lateral cephalic lobe subtriangular, apically subacute. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, 8- articulate, terminal article not offset; primary flagellum with strong 2-field callynophore; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged, brush setae present; calceoli present. Labrum, epistome and upper lip separate, with weak suture; epistome broadly rounded; upper lip produced, subacute apically. Mandible molar setose with vestigial triturating surface; palp attached about midway, article 2 not strongly broadened distally, article 3 blade-like. Maxilla 1 outer plate setal-tooth 7 present, cuspidate along most of straight inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with 9 apical robust setae. Gnathopod 1 chelate; coxa reduced, significantly shorter than coxa 2, subquadrate; basis moderately setose along anterior margin, or sparsely setose along anterior margin; ischium very long (length 4 × to 6 × breadth); carpus very long (length more than 4 × breadth), subequal in length to propodus, without posterior lobe; propodus margins subparallel, palm obtuse, entire, slightly concave; dactylus simple. Gnathopod 2 propodus palm transverse, slightly concave. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis broader than long, posterior margin not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner subquadrate, producing minute spine. Urosomite 1 not projecting over urosomite 2, with anterodorsal notch and slightly rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with strong plumose setae on both rami. Telson deeply cleft, with 1 apical robust setae on each lobe. Habitat. Marine. Feeding strategies. Scavenger (Diffenthal & Horton 2007). Depth range. 963 – 1864 m. Remarks. Our material agrees very well with the description of Diffenthal & Horton (2007). This is the first record of S. arabiensis outside the type locality in the Arabian Sea. This remarkable range extension from the north-western Indian Ocean into the South Pacific Ocean indicates a wide range for the species. There is no other species of Stephonyx known from this vast area except for the S. biscayensis of J.L. Barnard (1961) and Ledoyer (1986) from Kenya and Madagascar, which appears to be an undescribed species (see remarks under S. biscayensis). Distribution. Australia. Off the east coast from Flynn Reef, Queensland, to South East Cape, Tasmania (this study). Pakistan. Northern Arabian Sea (Diffenthal & Horton 2007)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on pages 63-66, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598","Corrigan, L., Horton, T., Fotherby, H., White, T. A. & Hoelzel, A. R. (2013) Adaptive Evolution of Deep-Sea Amphipods from the Superfamily Lysianassoidea in the North Atlantic. Evolutionary Biology, 41 (1), 154 - 165.","Barnard, J. L. (1961) Gammaridean Amphipoda from depths of 400 to 6000 meters. Galathea Report, 5, 23 - 128.","Ledoyer, M. (1986) Crustaces Amphipodes Gammariens. Familles des Haustoriidae a Vitjazianidae. Faune de Madagascar, 59, 599 - 1112."]}

Stephonyx Lowry & Stoddart, 1989 (Fig. 39) Stephonyx Lowry & Stoddart, 1989: 521.— Lowry & Stoddart, 2003: 284 (catalogue).— Diffenthal & Horton, 2007: 32.— Senna & Serejo, 2007: 8, 13 (key).—Narahara, Tomikawa & Torigoe: 2012 (key). Type species. Euonyx biscayensis Chevreux, 1908, by original designation. Included species. Stephonyx includes 13 species: S. arabiensis Diffenthal & Horton, 2007; S. biscayensis (Chevreux, 1908); S. carinatus Bellan-Santini, 1997; S. incertus Bellan-Santini, 1997; S. mytilus (Barnard & Ingram, 1990); S. laqueus (J.L. Barnard, 1967); S. normani (Stebbing, 1888); S. perexcavatus Narahara, Tomikawa & Torigoe, 2012; S. pirloti (Sheard, 1938); S. rafaeli sp. nov.; S. scutatus (Griffiths, 1977); S. talismani (Chevreux, 1919); S. uncinatus Senna & Serejo, 2007. Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum not forming cap covering callynophore. Antenna 2 with weakly developed brush setae. Mandible molar a setose tongue with vestigial triturating area, a reduced column with a triturating surface or occasionally a raised weakly setose plate. Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate slightly shorter than outer plate. Gnathopod 1 chelate; coxa 1 reduced, significantly shorter than coxa 2, subquadrate or tapering distally; ischium long (length 2 × to 4 × breadth) to very long (length 4 × to 6 × breadth) ; carpus very long (length more than 4 × breadth); propodus margins subparallel. Uropod 2 inner ramus not constricted. Telson deeply cleft. Remarks. Only three uristid genera, Euonyx, Kyska and Stephonyx have chelate first gnathopods. Kyska differs from Euonyx and Stephonyx in having a fully developed gnathopod 1 coxa (significantly reduced in Euonyx and Stephonyx). Stephonyx is a genus of scavengers with fully developed 7/4 crown of setal-teeth on the outer plate of maxilla 1 whereas Euonyx is a genus of ectoparasitic amphipod with strongly reduced (small) setal-teeth on the outer plate of maxilla 1., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 61, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","Lowry, J. K. & Stoddart, H. E. (2003) Crustacea: Malacostraca: Peracarida: Amphipoda, Cumacea, Mysidacea. Vol. 19.2 B. CSIRO Publishing, Melbourne, 531 pp.","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Chevreux, E. (1908) Diagnoses d'amphipodes nouveaux provenant des campagnes de la Princesse-Alice dans l'Atlantique nord. Bulletin de l'Institut Oceanographique, Monaco, 117, 1 - 13.","Bellan-Santini, D. (1997) Amphipods of the cold seep community on the South Barbados Accretionary Prism. Crustaceana, 70, 1 - 30. http: // dx. doi. org / 10.1163 / 156854097 x 00311","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. (1967) Bathyal and abyssal gammaridean Amphipoda of Cedros Trench, Baja California. Bulletin of the United States National Museum, 260, 1 - 205. http: // dx. doi. org / 10.5479 / si. 03629236.260.1","Stebbing, T. R. R. (1888) Report on the Amphipoda collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology, 29, 1 - 1737, pls. 1731 - 1210.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598","Sheard, K. (1938) The amphipod genera Euonyx, Syndexamine and Paradexamine. Records of the South Australian Museum, 6, 169 - 186.","Griffiths, C. L. (1977) Deep-sea amphipods from west of Cape Point, South Africa. Annals of the South African Museum, 73, 93 - 104.","Chevreux, E. (1919) Note preliminaire sur les amphipodes recueillis par les expeditions du Travailleur et du Talisman (1880 - 1883). Bulletin du Museum National d'Histoire Naturelle, Paris, 25, 574 - 580."]}

Stephonyx talismani (Chevreux, 1919) Euonyx talismani Chevreux, 1919: 576.— Stephensen, 1923: 41, fig. 2.— Chevreux, 1927: 47, pl. 2 figs 1–13.— Pirlot, 1933: 120 (key).—J.L. Barnard, 1958: 92.— Andres, 1987: 96 (table 2).— Costello et al., 1989: 32.— Barnard & Ingram, 1990: 3 (key).— Barnard & Karaman, 1991: 485.— Holmes et al., 1997: 186 (list).— Dauvin & Bellan-Santini, 2002: 315 (table 1). Stephonyx talismani.— Lowry & Stoddart, 1989: 521.— Palerud & Vader, 1991: 43.— Diffenthal & Horton, 2007: 39 (key).— Senna & Serejo, 2007: 13 (key).— Narahara et al., 2012: 1505 (key). Types. Syntypes, 1 juvenile, 5 mm, MNHN Am 5498; 1 female, 12 mm, MNHN Am 5499. Type locality. Off Cape Bojador, eastern North Atlantic Ocean (25°39’N 18°18’W), 698 m; and (25°39’N 18°22’W) 882 m [Talisman dredge stns 70 and 72 respectively]. Habitat. Marine, sand and coral shell. Depth range. 698–1275 m (Chevreux 1919; Stephensen 1923). Distribution. North Atlantic Ocean. Near Cape Bojador (Chevreux 1919); south-west of the Faeroe Islands (Stephensen 1923); Hatton-Rockall Basin (Andres 1987); coast of France (Dauvin & Bellan-Santini 2002)., Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 78, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Chevreux, E. (1919) Note preliminaire sur les amphipodes recueillis par les expeditions du Travailleur et du Talisman (1880 - 1883). Bulletin du Museum National d'Histoire Naturelle, Paris, 25, 574 - 580.","Stephensen, K. (1923) Crustacea Malacostraca, V: (Amphipoda, I). Danish Ingolf-Expedition, 3, 1 - 100.","Chevreux, E. (1927) Malacostraces (suite). III. Crustaces Amphipodes. Expeditions Scientifiqes du \" Travailleur \" et du \" Talisman \" pendant les annees 1880, 1881, 1882, 1883, 9, 41 - 152, pls. 151 - 114. http: // dx. doi. org / 10.5962 / bhl. title. 13677","Pirlot, J. M. (1933) Les amphipodes de l'expedition du Siboga. Deuxieme partie: Les amphipodes gammarides, II: - Les amphipodes de la mer profonde. 1. (Lysianassidae, Stegocephalidae, Stenothoidae, Pleustidae, Lepechinellidae). Siboga- Expeditie, Monographie, 33 c, 114 - 167.","Barnard, J. L. (1958) Index to the families, genera, and species of the gammaridean Amphipoda (Crustacea). Allan Hancock Foundation Publications, Occasional Paper, 19, 1 - 145.","Andres, H. G. (1987) Die Gammaridea der 76. Reise von FFS \" Walther Herwig \" mit Beschreibung von Parachevreuxiella lobata gen. n. und sp. n. (Crustacea: Amphipoda). Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 84, 95 - 103.","Costello, M. J., Holmes, J. M. C., McGrath, D. & Myers, A. A. (1989) A review and catalogue of the Amphipoda (Crustacea) in Ireland. Irish Fisheries Investigations, Series B (Marine), 33, 1 - 70.","Barnard, J. L. & Ingram, C. (1990) Lysianassoid Amphipoda (Crustacea) from deep-sea thermal vents. Smithsonian Contributions to Zoology, 499, 1 - 80. http: // dx. doi. org / 10.5479 / si. 00810282.499","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Holmes, J. M. C., Costello, M. J. & Connor, D. W. (1997) Crustacea. In: Howson, C. M. & Picton, B. E. (Eds.), The species directory of the marine fauna and flora of the British Isles and surrounding seas. Ulster Museum Publication, Ulster Museum, Belfast, pp. 142 - 209.","Dauvin, J. C. & Bellan-Santini, D. (2002) Les crustaces amphipodes Gammaridea benthiques des cotes francaises metropolitaines: Bilan des connaissances. Crustaceana, 75, 299 - 340.","Lowry, J. K. & Stoddart, H. E. (1989) Stephonyx, a new, widespread genus of lysianassoid Amphipoda. Zoologica Scripta, 18, 519 - 525. http: // dx. doi. org / 10.1111 / j. 1463 - 6409.1989. tb 00145. x","Palerud, R. & Vader, W. (1991) Marine Amphipoda Gammaridea in north-east Atlantic and Norwegian Arctic. Tromura, Naturvitenskap, 68, 1 - 97.","Diffenthal, M. & Horton, T. (2007) Stephonyx arabiensis (Crustacea: Amphipoda: Lysianassoidea: Uristidae), a new deepwater scavenger species from the Indian Ocean, with a key to the genus Stephonyx. Zootaxa, 1665, 31 - 41.","Senna, A. R. & Serejo, C. (2007) A new deep-sea species of Stephonyx (Lysianassoidea: Uristidae) from off the central coast of Brazil. Nauplius, 15 (1), 7 - 14.","Narahara, Y., Tomikawa, K. & Torigoe, K. (2012) Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species. Journal of Natural History, 46, 1477 - 1507. http: // dx. doi. org / 10.1080 / 00222933.2012.675598"]}

Parschisturella Andres, 1983 (Fig. 29) Parschisturella Andres, 1983: 212.— Barnard & Karaman, 1991: 517. Type species. Parschisturella simplex Andres, 1983, original designation. Included species. Parschisturella includes five species: P. carinata (Schellenberg, 1926b); P. martrudan sp. nov.; P. medora sp. nov.; P. pilot sp. nov.; P. simplex Andres, 1983. Diagnostic description. Antenna 1 peduncle article 1 without anterodistal lobe; accessory flagellum without cap covering callynophore. Antenna 2 with brush setae. Labrum epistome and upper lip separate; upper lip strongly produced and apically acute. Mandible molar a reduced column, proximally setose, distally triturating or setose with distal triturating surface . Maxilla 1 outer plate a well developed 7/4 crown. Maxilla 2 inner plate slightly to significantly shorter than outer plate. Gnathopod 1 simple, parachelate or weakly subchelate; coxa 1 large, about as long as coxa 2, subrectangular with straight anterior margin; ischium short (length less than 2 × breadth); carpus long (length 2 to 4 × breadth); propodus margins tapering distally. Uropod 2 inner ramus constricted (weakly) or not. Telson deeply to moderately cleft. Remarks. Six uristid genera (Eclecticus, Galathella, Ichnopus, Nagada, Paralibrotus and Parschisturella, have simple first gnathopods. Parschisturella does not appear to be particularly similar to any of these genera. All have four to five generic level differences from Parschisturella. In Parschisturella gnathopod 1 varies from simple to weakly subchelate to parachelate and the telson varies from moderatly to deeply cleft. All species have a spine on the posterior margin of the gnathopod 1 dactylus. Parschisturella appears to be most smilar to the Australian endemic genus Des. The main differences between Parschisturella and Des are the accessory flagellum cap (absent or partially developed in Parschisturella, large and fully-developed in Des) and the labium (upper lip apically produced in Parschisturella and not produced in Des). Until now Parschisturella has been considered an Antarctic endemic, but it is well represented in the temperate Australian fauna by at least three species. Distribution. Antarctica and Australia. Key to Parschisturella species 1. Gnathopod 1 parachelate....................................................................... P. carinata - Gnathopod 1 weakly subchelate......................................................................... 2 - Gnathopod 1 simple.................................................................................. 3 2. Epimeron 3 posteroventral corner forming a weak spine.............................................. P. medora - Epimeron 3 posteroventral corner acutely produced with a tiny notch....................................... P. pilot 3. Urosomite 1 evenly rounded. Telson with 2 apical robust setae per lobe................................ P. martrudan - Urosomite 1 dorsally straight. Telson with 4–5 apical robust setae per lobe................................ P. simplex, Published as part of Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), pp. 1-92 in Zootaxa 3867 (1) on page 48, DOI: 10.11646/zootaxa.3867.1.1, http://zenodo.org/record/5585734, {"references":["Andres, H. G. (1983) Die Gammaridea (Crustacea: Amphipoda) der Deutschen Antarktis-Expeditionen 1975 / 76 und 1977 / 78. 3. Lysianassidae. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 80, 183 - 220.","Barnard, J. L. & Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13, 1 - 866. http: // dx. doi. org / 10.3853 / j. 0812 - 7387.13.1991.367","Schellenberg, A. (1926 b) Die Gammariden der Deutschen Sudpolar-Expedition 1901 - 1903. Deutsche Sudpolar-Expedition, 18, 235 - 414."]}