Eulima tristis K.H.J. Thiele, 1925
Entocolax trochodotae S.G. Heding, 1934
Petersia trochoides (FOSSIL) A.E.M. Cossmann, 1899 †
Sabinella troglodytes (K.H.J. Thiele, 1925)
Melanella trunca (R.B. Watson, 1897)
Melanella truncata (H.H. Suter, 1908)
Apicalia tryoni (R. Tate & W.L. May,1900)
Eulima tulearensis É. Lamy, 1910
Oceanida tumerae (C.F. Laseron, 1955)
Mucronalia tumida G.W. Tryon,1886 ex W.H. Pease MS
Bathycrinicola tumidula (K.H.J. Thiele, 1912)
Melanella turbonilloides P. Bouchet & A. Warén,1986
Eulima turgidula (C.B. Adams, 1861)
Melanella turrita P. Bouchet & A. Warén,1986
Melanella tutamoensis (FOSSIL) J. Marwick, 1931 †
Haliella tyrrhena (FOSSIL) S.I. Di Geronimo& R. La Perna, 1999 †
Niso umbilicata (FOSSIL) Lea, 1833 †
Telleria umbilicata (FOSSIL) E.A.L. Kittl, 1894 †
Eulima undulosa L. de Folin, 1893
Eulima unicincta (FOSSIL) M. Yokoyama, 1922 †
Eulima unilineata (A. Adams & L.A. Reeve,1850)
Stilifer utinomi T. Habe, 1951
Eulima valida A. Adams, 1861
Eulima variabilis O. Böttger, 1893
Mucronalia variabilis M.M. Schepmanin A. Voeltzkow, 1913
Eulima varians G.B. I Sowerby, 1834
Goodingia varicosa (M.M. Schepman, 1909)
Melanella vegrandis (R. Murdoch & H.H. Suter,1906)
Eulima venatrix R.B. Newton, 1891
Niso venosa G.B. III Sowerby, 1895
Hemiaclis ventrosa (H.B.S. Friele, 1876)
Eulima venusta W.H. Pease, 1868
Halielloides verrilliana (K.J. Bush, 1909)
Melanella versa W.H. Dall, 1927
Eulima victoriae J.H. Gatliff & C.J. Gabriel,1914