Shells of Amphidromus ingens Möllendorff, 1900 A lectotype of “Amphidromus ingens” (SMF 7565) B paralectotype of “Amphidromus ingens” (SMF 7566) C holotype of “Amphidromus naggsi” (RMNH.5003908) D, E specimens from M’drak, Dak Lak, Vietnam (NMNS-8764-082, NMNS-8764-084) F specimen from Ea M’doal, M’drak, Dak Lak, Vietnam (NMNS-8764-087) G specimen from Krong A, M’drak, Dak Lak, Vietnam (NMNS-8764-088) H, I specimens from Ea Sup, Dak Lak, Vietnam (NMNS-8764-093, NMNS-8764-101). Credit: J. Goud, RMNH (C).