Trigonostoma scala (J.F. Gmelin, 1791)
Trigonostoma scalare (J.F. Gmelin, 1791)
Scalptia scalariformis (J.B.P.A. Lamarck, 1822)
Mariasveltia scalarina (FOSSIL) (T.A. Conrad, 1866 †)
Scalptia scalarina (J.B.P.A. Lamarck, 1822)
Scalptia scalata (G.B. I Sowerby, 1832)
Axelella scalatella (FOSSIL) (R.J.L. Guppy, 1873 †)
Pyruclia scheibei (FOSSIL) (F.M. Anderson, 1929 †)
Pyruclia schmidti (FOSSIL) B.M. Landau & al., 2012 †
Pyruclia schucherti (FOSSIL) A.A. Olsson, 1932 †
Admete schythei (R.A. Philippi, 1855)
Bonellitia scobina (C. Hedley & W.F. Petterd,1906)
Aphera scopalveus (FOSSIL) Finlay, 1926 †
Trigonostoma scrobiculatum (FOSSIL) (R. Hoernes, 1856 †)
Sveltella semiclathrata (FOSSIL) (L.J. Morlet, 1885 †)
Trigonostoma semidisjunctum (G.B. II Sowerby, 1849)
Nipponaphera semipellucida (A. Adams & L.A. Reeve,1850)
Narona semota (FOSSIL) P.O. Jung, 1969 †
Cancellaria semperiana J.C.H. Crosse, 1863
Ventrilia senarium (FOSSIL) (R.E. Petit& R.C. Hoerle, 1976 †)
Unitas separata (FOSSIL) (G.P. Deshayes, 1864 †)
Brocchinia septentrionalis (H.J. Finlay, 1930)
Cancellaria sepulcralis (FOSSIL) B.M. Landau & al., 2012 †
Trigonostoma sericea (FOSSIL) (W.H. Dall, 1892 †)
Brocchinia serrata (FOSSIL) (C.R. Laws, 1935 †)
Euclia serrata (FOSSIL) A.A. Olsson, 1964 †
Massyla shirleyae (FOSSIL) A.A. Olsson, 1967 †
Zeadmete sikatunai A. Verhecken, 2011
Cancellaria siletzensis (FOSSIL) G.D. Hanna, 1924 †
Plesiotriton silinoensis A. Verhecken, 2011
Bivetiella similis (Sowerby, 1833)
Cancellaria simplex (FOSSIL) Anderson, 1905 †
Pepta simplex (C.F. Laseron, 1955)
Merica sinensis L.A. Reeve, 1856
Tritonoharpa siphonata (L.A. Reeve, 1844)