Chamalycaeus satsumanus tanegashimae H.A. Pilsbry, 1902 Japan, Kagoshima
Cyclophorus saturnus L. Pfeiffer, 1862
Micraulax scabra W. Theobald India, Madras
Platyrhaphe scalaris (L. Pfeiffer, 1851)
Glossostylus schepmani F.F. Laidlaw, 1957 Indonesia, Bengkulu55 mm
Pterocyclos schileykoi Thach & F. Huber, 2017
Pterocyclus schmackeri O.F. von Möllendorff,1897
Boucardicus scopulus K.C. Emberton, 1994 Madagascar
Chamalycaeus sculptilis (W.H. Benson, 1856)
Alycaeus selangoriensis Foon & Liew, 2017
Litostylus semisulcatus (G.B. Sowerby, 1843) Thailand, Phuket37,5 mm
Cyclophorus semperi W. Kobelt, 1886 Philippines, Cebu23 mm
Alycaeus senyumensis Foon & Liew, 2017
Opisthoporus serenae J.J. Vermeulen& D.J. Junau, 2007 Borneo, Sarawak
Leptopoma sericatum L. Pfeiffer, 1851 Malaysia, Borneo15 mm
Cyclophorus sericinus J.F. Quadras& O.F. von Möllendorff, 1894 Philippines, Palawan Island22,8 mm
Dioryx setchuanensis (P.M. Heude, 1885) China, Guangxi province
Mychopoma seticinctum (R.H. Beddome, 1875) India, Cuddalore
Cyclotus setosus O.F. von Möllendorff,1894 Thailand23 mm
Lagochilus sexfiluris (P.M. Heude, 1882) China, Guangxi province8,8 mm
Japonia shigetai H. Minato, 1985 Japan, Tokara Islands
Alycaeus shiosakimasahiroi Yano,Matsuda & Nishi, 2016
Theobaldius shiplayi (L. Pfeiffer, 1856)
Cyclophorus siamensis G.B. Sowerby, 1850 China, Guangxi province40 mm
Caspicyclotus sieversi (L. Pfeiffer, 1871) Iran8,3 mm
Leptopoma signatum (L. Pfeiffer, 1856) Malaysia, Borneo
Japonia similis (E.A. Smith, 1894) Malaysia, Borneo
Boucardicus simplex K.C. Emberton& T.A. Pearce, 1999 Madagascar, Tulear
Rhiostoma simplicilabre L. Pfeiffer, 1862 Cambodia
Opisthoporus singaporeanus Low & S. K. Tan, 2017
Cyathopoma sivagherrianum R.H. Beddome, 1875 India, Western Ghats
Leptopoma skertehly (E.A. Smith) Malaysia, Borneo
Japonia smithi (W. Kobelt& O.F. von Möllendorff, 1897) Malaysia, Borneo
Rhiostoma smithi P. Bartsch, 1932 Thailand, Phang-Nga31,1 mm
Cyclotus solutus O.F. von Möllendorff Malaysia13 mm