Diplommatina tosanella abei J.T. Kuroda, 1980
Palaina trachelostropha O.F. von Möllendorff,1890
Plectostoma transequatorialis (J.J. Vermeulen, 1995)
Opisthostoma trapezium W.S.S. Van Benthem-Jutting,1952
Diplommatina triangula T.C. Yen, 1939
Opisthostoma tridens J.J. Vermeulen, 1991
Plectostoma tuba (J.J. Vermeulen, 1994)
Adelopoma tucma A. Doering, 1884
Diplommatina tumida H.H. Godwin-Austen, 1870
Arinia turgida J.J. Vermeulen, 1996
Plectostoma turriforme (W.S.S. Van Benthem-Jutting, 1952)
Diplommatina turris H.A. Pilsbry, 1901
Diplommatina turris chineni H. Minato, 1981
Diplommatina tylocheilos J.J. Vermeulen, T.S. Liew& M. Schilthuizen, 2015
Diplommatina tyosenica J.T. Kuroda & M. Miyanaga,1939
Diplommatina ujiinsularis H. Minato, 1982
Diplommatina ultima H.A. Pilsbry & Y. Hirase,1909
Plectostoma umbilicatum (W.S.S. Van Benthem-Jutting, 1952)
Diplommatina umpangensis S. Panha, 1997
Diplommatina unicrenata H.H. Godwin-Austen, 1892
Diplommatina uozumi H. Minato, 1976
Diplommatina uzenensis H.A. Pilsbry, 1900
Diplommatina uzenensis cassa H.A. Pilsbry, 1901
Arinia valkenburgi J.J. Vermeulen, 1996
Diplommatina ventricosa H.A. Pilsbry & Y. Hirase,1904
Diplommatina ventriculus O.F. von Möllendorff,1891
Diplommatina ventrosula A. Zilch, 1953
Opisthostoma vermiculum R. Clements& J.J. Vermeulen, 2008
Diplommatina vespa H.A. Pilsbry & Y. Hirase,1904
Plectostoma wallacei (C.M.F. Ancey, 1887)
Plectostoma wallacei busauense (E.A. Smith, 1893)
Plectostoma wallacei teinostoma (J.J. Vermeulen, 1994)
Palaina waterhousei T. Iredale, 1944
Diplommatina welzeni J.J. Vermeulen, 1993
Diplommatina whiteheadi E.A. Smith, 1898