Mitrella scaldensis (FOSSIL) (Regteren Altena, 1956 †)
Mitrella scapula K. Monsecour & D. Monsecour,2016
Mitrella schepmani D. Monsecour & D. Monsecour,2007
Mitrella scripta (C. Linnaeus, 1758)
Euplica scripta (J.B.P.A. Lamarck, 1822)
Costoanachis scutulata (L.A. Reeve, 1859)
Cilara secalina (R.A. Philippi, 1846)
Zafra selasphora (J.C. Melvill & R. Standen,1901)
Mitrella semicaudata (FOSSIL) (L.M.D. Bellardi, 1849 †)
Zafra semiclatriata W.J. Sleurs, 1987
Mitrella semiconvexa (J.B.P.A. Lamarck, 1822)
Zafra seminulum (K.H.J. Thiele, 1925)
Pyreneola semipicta (G.B. III Sowerby, 1894)
Costoanachis semiplicata (R.E.C. Stearns, 1873)
Pyreneola semiplicata (G.B. III Sowerby, 1894)
Anachis semisculpta (G. Nevill & H. Nevill,1875)
Parviterebra separanda (J.R. le B. Tomlin, 1923)
Zemitrella sericea A.W.B. Powell, 1937
Decipifus serratus (P.P. Carpenter, 1857)
Costoanachis sertulariarum (A.V.M.D. D'Orbigny,1839)
Pyreneola shepstonensis (E.A. Smith, 1910)
Mitrella siciliai E. Rolán & S. Gori, 2012
Zemitrella siligo T.A. Okutani, 1964
Mitrella sima (FOSSIL) Gardner, 1947 †
Costoanachis similis (E. Ravenel, 1861)
Mitrella simplex (M.M. Schepman, 1911)
Anachis sinaloa (A.M. Strong& L.G. Hertlein, 1937)
Sincola sincola (FOSSIL) (A.A. Olsson, 1922 †)
Anachis sinensis (G.B. II Sowerby, 1894)
Sincola sinuata (G.B. III Sowerby, 1875)
Liratilia sinuata A.W.B. Powell, 1937
Cosmioconcha sirderae J. Pelorce, 2017
Decipifus sixaolus A.A. Olsson& J.T.L. McGinty, 1958
Cotonopsis skoglundae P.O. Jung, 1989
Antimitrella slateri Lussi, 2017