Shells of Pupina arula species group from mainland Southeast Asia A, B Pupina arula A syntype UMZC I.103025 and B specimen NHMUK 1888.12.4.109. C, D Pupina mouhoti, possible syntypes NHMUK ex. Cuming coll. E, F Pupina vescoi E syntype NHMUK 1893.2.4.767 and F specimen SMF 109956/1 G Pupina perakensis, lectotype SMF 109969/1 H Pupina excisa, lectotype SMF 110778/1 I–K Pupina exclamationis I, J syntypes MNHN-IM-2000-35840 and K specimen NHMUK 1901.12.23.205 “forma minor”. Photo: J. Ablett, H. Taylor, NHM (A), A. Lardeur, P. Maestrati, MNHN (I, J).