Prosipho spiralis K.H.J. Thiele, 1912
Cantharus spiralis J.E. Gray, 1839
Aliofusus stamineus (FOSSIL) N.F. Sohl, 1964 †
Cominella staufti (FOSSIL) A.A. Olsson, 1928 †
Turrivolutopsius stejnegeri (W.H. Dall, 1884)
Pollia stephanensis (FOSSIL) M.A. Peyrot, 1924 †
Pollia stephanensis? M.A. Peyrot, 1924
Spikebuccinum stephaniae M.G. Harasewych& Y.I. Kantor, 2004
Searlesia stichense (FOSSIL) (A.T. von Middendorff,1848 †)
Neptunea stilesi A.G. Smith, 1968
Prosipho stilwelli (FOSSIL) A.G. Beu, 2009 †
Beringius stimpsoni (A.A. Gould, 1860)
Colus stimpsoni (O.A.L. Mörch, 1868)
Colus stimpsoni brevis A.E. Verrill, 1882
Colus stimpsoni liratulus (O.A.L. Mörch, 1867)
Liomesus stimpsoni W.H. Dall, 1889
Neptunea stonei H.A. Pilsbry, 1892
Lussivolutopsius strelzovae Y.I. Kantor, 1990
Neptunea striata (FOSSIL) (J. de C. Sowerby,1813 †)
Neptunea striata lyratodespecta (FOSSIL) F. Strauch, 1972 †
Pisania striata (J.F. Gmelin, 1791)
Buccinum striatellum A.N. Golikov, 1980
Buccinum striatissimum G.B. III Sowerby, 1899
Parvisipho striatus (FOSSIL) (É.A. Benoist, 1885 †)
Buccinum strigillatum W.H. Dall, 1891
Buccinum strigillatum fucanum W.H. Dall, 1907
Engina strongi H.A. Pilsbry & H.N. Lowe,1932
Pollia suarezi (FOSSIL) Meunier & Gayet, 1996 †
Eocantharus subambiguus (FOSSIL) (A.V.M.D. D'Orbigny,1850 † †)
Eocantharus subandrei (FOSSIL) (A.V.M.D. D'Orbigny,1850 †)
Solenosteira subcarinata (FOSSIL) (J.B.P.A. Lamarck,1803 †)
Pollia subcostata (C.F.F. von Krauss, 1848)
Neptunea subdilatata (T.C. Yen, 1936)
Proneptunea subfenestra P.G. Oliver & G.B. Picken,1984
Cominella subfilicea (FOSSIL) R. Tate, 1888 †