New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics

Seven new land snail species are described from the Antsingimavo and Beanka karst formations, northeast of Maintirano, central western Madagascar: Ampelita andriamamonjyi, A. beanka, A. lindae, Conulinus randalanai, Kalidos maryannae, Tropidophora humbug and T. sericea. Additional notes, records and illustrations are also provided for a further ten regionally endemic species.