Euphaedusa stearnsii iriomotensis J.T. Kuroda, 1960
Steeriana steeriana (E.R. Sykes, 1893)
Euphaedusa steetzneri (H.A. Pilsbry, 1919)
Megalophaedusa stenospira (A. Adams, 1868)
Medora stenostoma (E.A. Rossmässler, 1839)
Phaedusa stenothyra O.F. von Möllendorff,1901
Charpentieria stenzii (E.A. Rossmässler, 1836)
Charpentieria stenzii butoti R.A. Bank, 1987
Charpentieria stenzii cincta (L. Brumati, 1838)
Charpentieria stenzii costulatostriata (C.A. Westerlund, 1878)
Charpentieria stenzii faueri R.A. Bank, 1987
Charpentieria stenzii letochana (P.V. Gredler, 1874)
Charpentieria stenzii nordsiecki W.A. Fauer, 1990
Charpentieria stenzii paroliniana (F.E. De Betta& P. Martinati, 1855)
Charpentieria stenzii westerlundi H. Nordsieck, 1993
Stereophaedusa stereoma (H.A. Pilsbry, 1901)
Stigmatica stigmatica (E.A. Rossmässler, 1836)
Stigmatica stigmatica sturmii (L. Pfeiffer, 1852)
Hemizaptyx stimpsoni (C.B. Adams, 1868)
Hemizaptyx stimpsoni harimensis (H.A. Pilsbry, 1901)
Hemizaptyx stimpsoni ikiensis H.A. Pilsbry, 1905
Hemizaptyx stimpsoni kochiensis (H.A. Pilsbry, 1901)
Hemizaptyx stimpsoni perignobilis (H.A. Pilsbry, 1901)
Hemizaptyx stimpsoni sadoensis (H.A. Pilsbry, 1903)
Hemizaptyx stimpsoni strictaluna (O. Böttger, 1877)
Hemizaptyx stimpsoni subaurantiaca (H.A. Pilsbry, 1900)
Hemizaptyx stimpsoni subgibbera (O. Böttger, 1877)
Oospira stoliczkana (E.R. Sykes, 1893)
Bulgarica stolii (L. Pfeiffer, 1859)
Alopia straminicollis (J.G.F. de Charpentier,1852)
Alopia straminicollis monacha M. von Kimakowicz, 1894
Cristataria strangulata (L. Pfeiffer, 1841)
Cristataria strangulata davidiana (J.R. Bourguignat, 1868)
Clausilia stranzendorfensis (FOSSIL) H. Nordsieck, 1990 †
Mucronaria strauchi O. Böttger, 1878