Illustrated type catalogue of Amphidromus Albers, 1850 in the Natural History Museum, London, and descriptions of two new species

Shells and live snails characteristics. A Living snail of A. (Syndromus) globonevilli Sutcharit and Panha, sp. n. from the type locality with a shell height of approximately 20 mm B Living snail of A. (Syndromus) principalis Sutcharit and Panha, sp. n. from the type locality with a shell height of approximately 25 mm C–F A. (Syndromus) globonevilli Sutcharit and Panha, sp. n. C holotype CUMZ 4925 and D–F paratypes CUMZ 4927 G–I Syntypes UMZC of A. sinensis (Benson, 1851) from China J–L A. (Syndromus) principalis Sutcharit and Panha, sp. n. J holotype CUMZ 2543 and K, L paratypes CUMZ 2478.