Trichia sericea (J.P.R. Draparnaud, 1801) Germany
Xerocrassa serrulata (H.H. Beck, 1837) Egypt7 mm
Candidula setubalensis (L. Pfeiffer, 1850) Portugal7 mm
Helicomela setulosa (R.T. Lowe, 1831) Portugal, Madeira13,2 mm
Xerocrassa siderensis (H. von Maltzan, 1883) Greece,11,1 mm
Xerotricha silosensis A. Ortiz De Zárate, 1950 Spain, Burgos6 mm
Leptaxis simia (A.E.J. Férussac, 1832) Portugal, Madeira16,9 mm
Xerocrassa simulata (C.G. Ehrenberg, 1831) Israel21,7 mm
Xerocrassa simulata lothari H.K. Mienis Israel1 mm
Trochoidea siniaca (E.C. Von Martens) Israel
Xerocrassa siphnica (W. Kobelt, 1883) Greece
Candidula sipylensis J. Germain, 1933 Turkey
Xerocrassa sitiensis (H. von Maltzan, 1887) Cyprus10,5 mm
Xeropicta smyrnocretica (J. Germain, 1933) Turkey10 mm
Helicella snassensis (P.M. Pallary, 1918) Morocco, cap Cantin18 mm
Hesseola solidior (A. Mousson, 1863) Turkey
Monacha solitudinis (J.R. Bourguignat, 1852) Lebanon
Xeroleuca souirensis (P.M. Pallary, 1921) Morocco, cap Cantin16 mm
Candidula spadae (P. Calcara, 1845) Italy, Aquila
Caseolus sphaerulus (R.T. Lowe, 1852) Portugal, Madeira
Monacha spiroxia (J.R. Bourguignat, 1868) Syria13 mm
Ochtephila spirulina (T.D.A. Cockerell, 1921) Portugal, Madeira5,5 mm
Helicella spiruloides A.J. Wagner, 1916 Bulgaria
Trochoidea spratti L. Pfeiffer, 1846 Malta6 mm
Trochoidea spratti calcarata L. Benoit, 1860 Malta6 mm
Trochoidea spratti macrostoma E.C. Von Martens, 1873 Malta7 mm
Trochoidea spratti ogygiaca C.A. Westerlund, 1889 Malta7 mm
Trochoidea spratti perplanata H.A. Pilsbry, 1893 Malta8 mm
Spirorbula squalida R.T. Lowe, 1852 Portugal, Madeira6,2 mm
Abchasohela stephaniae (V. Hüdec& G.I. Lezhawa, 1970) Russia, Georgia
Helicella stiparum (E.A. Rossmässler, 1854) Spain, Almeria17 mm
Monacha stipulifera B. Hausdorf, 2000 Turkey
Helicopsis striata (O.F. Müller, 1774) Ukraine10 mm
Helicopsis striata austriaca E. Gittenberger, 1969 Austria, Podersdorf
Helicopsis striata hungarica (L. Soós & H. Wagner,1935) Austria, Podersdorf