Platycochlium sarawakense F.F. Laidlaw, 1950 Malaysia, Borneo
Platycochlium saulae S.P. Dance, 1970 Borneo, Sarawak
Streptaxis scalptus (W.T. Blanford, 1899) India, Cuddalore
Tanzartemon seddonae P. Tattersfield& B. Rowson, 2011 Tanzania
Gulella selene A.C. van Bruggen& J.L. Van Goethem, 1999
Parvedentulina setra K.C. Emberton& T.A. Pearce, 2000 Madagascar
Gulella sexdentata (E.C. Von Martens, 1869) Tanzania
Ptychotrema shagamuense (O.C. Oke & Odiete, 1996) Nigeria15,8 mm
Tayloria shimbiensis M. Connolly, 1923
Perrottetia siamensis (L. Pfeiffer, 1862) Southern of Thailand12,7 mm
Silhouettia silhouettae (E.C. Von Martens, 1898) Seychelles, Silhouette Island
Glabrennea silhouettensis B. Verdcourt, 1994 Seychelles
Ennea silvaticum H.A. Pilsbry, 1919
Parvedentulina simeni (E. Fischer-Piette, Ch.P. Blanc, F. Blanc& F. Salvat, 1994) Madagascar
Perrottetia simoniana (P.M. Heude, 1890) South Vietnam
Parvedentulina simplex K.C. Emberton, 2002 Madagascar
Elma sinensis O.F. von Möllendorff,1886 China, Guangdong province
Haploptychius sinensis A.A. Gould Cuba
Haploptychius sinuosa (L. Pfeiffer, 1861) South Vietnam
Goniodomulus solaniformis (FOSSIL) M. Harzhauser& T.A. Neubauer, 2016 † Oman
Gulella soulaiana E. Fischer-Piette, 1973 Madagascar
Seychellaxis souleyetianus (S.A.A. Petit De La Saussaye, 1841) Seychelles
Parvedentulina species Madagascar
Juventigulella spinosa P. Tattersfield, 1998 Tanzania, Kilimanjaro
Rectartemon spixianus (L. Pfeiffer, 1841)
Discartemon stenostomus W.S.S. Van Benthem-Jutting, 1954 Malaysia
Streptartemon streptodon (S. Moricand, 1851) Brazil6,2 mm
Gulella streptosteleopsis A.C. van Bruggen, 2007 Zanzibar Island
Gonospira striaticostus P.M.A. Morelet, 1866 Mauritius
Tonkinia struposa (J.F. Mabille, 1887) Vietnam, Tonkin
Gulella suavissima (H.B. Preston, 1913) Kenya
Streptaxis subacutus (W.T. Blanford, 1899) India, Cuddalore
Gulella subhyalina (E.A. Smith)
Streptaxis subregularis L. Pfeiffer, 1845 Brazil, Ceara8 mm
Gulella subringens (J.C.H. Crosse, 1886) Tanzania