Helicella striatitala C.E. Prieto, 1985
Geomitra striatopunctata (FOSSIL) E.A.L. Kittl, 1894 †
Euomphalia strigella (J.P.R. Draparnaud, 1801)
Euomphalia strigella mehadiae (J.R. Bourguignat, 1881)
Euomphalia strigella ruscinica (J.R. Bourguignat, 1881)
Trochulus striolatus (C. Pfeiffer, 1828)
Trochulus striolatus danubialis (S. Clessin, 1874)
Diodontella stschukini W.A. Lindholm, 1929
Stygius stuxbergi (C.A. Westerlund, 1876)
Monacha subaii B. Hausdorf, 2000
Helicopsis subcalcarata G. Nägele, 1903
Caseolus subcalliferus (L.A. Reeve, 1854)
Metatheba subcarthusiana (W.A. Lindholm, 1913)
Trichia suberecta S. Clessin, 1873
Urticicola suberinus (P. Bérenguier, 1885)
Helicopsis subfilimargo N. Gural-Sverlova, 2010
Metafruticicola sublecta (H. von Maltzan, 1884)
Xerosecta submoesta (J.F. Mabille, 1898)
Amandana subrogata (L. Pfeiffer, 1853)
Xerosecta subrostrata (A.E.J. Férussac, 1821)
Zenobiella subrufescens (J.S. Miller, 1822)
Xeroleuca subsuta (E.C. Von Martens, 1900)
Petasina subtecta (W. Polinski, 1929)
Xerocrassa subvariegata (H. von Maltzan, 1883)
Leucochroopsis subvillosa (FOSSIL) (Sandberger, 1858) †
Ponentina subvirescens (J.C. Bellamy, 1839)
Noneulota surprisa A.A. Schileyko & M. Horsak,2007
Archaica suspecta A.A. Schileyko& S.E. Moiseeva, 1989
Candidula syrensis (L. Pfeiffer, 1846)
Monacha syriaca (C.G. Ehrenberg, 1831)
Discula tabellata R.T. Lowe, 1852
Xerosecta taeniata (C.A. Westerlund, 1888)
Monacha talischana (E.C. Von Martens, 1880)
Paratheba talyschana (E.C. Von Martens, 1880)
Kokotschashvilia tanta A.A. Schileyko, 1978