The recent apple snails of Africa and Asia (Mollusca: Gastropoda: Ampullariidae: Afropomus, Forbesopomus, Lanistes, Pila, Saulea): a nomenclatural and type catalogue. The apple snails of the Americas: addenda and corrigenda Author Cowie, Robert H. text Zootaxa 2015 3940 1 1 92 journal article 10.11646/zootaxa.3940.1.1 5013eaff-bb37-4be3-a1ea-43c11d0cf5d1 1175-5326 288204 B5D45D1B-4B52-4F0B-8AF6-B587F8857475 nucleus Ampullaria nucleus Philippi, 1852 . Updated status of type material — lectotype ( Köhler & Glaubrecht 2006: 207, fig. 2H ): ZMB 1374a; paralectotype : ZMB 1374b [listed as syntypes by Cowie & Thiengo (2003: 79) ]. Additional remarks . Treated as incertae sedis among New World Ampullariidae by Cowie & Thiengo (2003: 79) . The name nucleus treated as a noun in apposition. oligista Pomacea ( Effusa ) oligista Pilsbry & Olsson, 1953 . Additional type material — paratypes : USNM 605847 (3 spms.). pachystoma Ampullaria pachystoma Philippi, 1849 . Additional detail of type material —possible syntype : MNHNCL 15917 (1 spm., old number 61.044). Additional remarks . The possible syntype is smaller and the shell banding pattern does not match the illustration of pachystoma given by Philippi (1852a: 44, pl. 12, fig. 5) , though the labels identify it as pachystoma Philippi. However , although bigger than Philippi’s dimensions for crocostoma Philippi, the shape of the shell is a better match and the shell banding pattern is an excellent match. It is possible, therefore, that this shell is a syntype of crocostoma Philippi, perhaps the illustrated specimen.