Satsuma saqamii J.T. Kuroda & H. Minato,1975 Japan
Thersites sardalabiata J.C. Cox, 1871 Australia, Giru31 mm
Satsuma sargentiana (H.A. Pilsbry, 1901)
Ganesella saurivonga (A.R.J.B. Bavay& P. Dautzenberg, 1900) Vietnam, Tonkin
Thersites saxicola T. Iredale, 1937 Australia, Queensland24 mm
Zachrysia scabrosa (F. Poey, 1854) Cuba25 mm
Papuina schafferyi T. Iredale, 1940 Australia46,4 mm
Planispira scheepmakeri (L. Pfeiffer, 1851) Moluccas28,7 mm
Sinumelon schevilli W.J. Clench & S. Archer,1938 Australia, Hughenden
Amphidromus schileykoi Thach, 2016
Amphidromus schomburgki (L. Pfeiffer, 1860) Eastern of Thailand48 mm
Plectorhagada scolythra G.A. Solem, 1985 Australia, Carnarvon17 mm
Obba scrobiculata L. Pfeiffer, 1842 Philippines, Cebu23 mm
Papuina secans C. Hedley, 1894 Papua New Guinea
Prototrachia sedula G.A. Solem, 1984 Northern Territory
Amphidromus sekincauensis B. Dharma, 2007 Indonesia, Sumatra43,1 mm
Satsuma selasia (H.A. Pilsbry, 1902) Japan, Wakayama
Megalacron sellersi (J.C. Cox, 1871) Solomon Islands23,1 mm
Hadra semicastanea (L. Pfeiffer, 1849) Australia, Port Stephens33,2 mm
Amphidromus semifrenatus E.C. Von Martens, 1900 Indonesia, Sumatra27 mm
Chloritis semiquadrivolvis (E.C. Von Martens, 1903) Malaysia, Borneo
Amphidromus semitessellatus (L.J. Morlet, 1885) Vietnam35,3 mm
Austrochloritis separanda T. Iredale, 1938 Australia, Miriam Vale
Mecyntera septemtrionalis (C. Hedley, 1891) Indo-Pacific
Ordtrachia septentrionalis G.A. Solem, 1984 Australia, Lindeman Island
Camaena seraphinica P.M. Heude, 1890 China, Guangxi province58 mm
Trachia serpentinitica J.J. Vermeulen, T.S. Liew& M. Schilthuizen, 2015
Kimberleytrachia serrata F. Criscione & F. Köhler,2015 Western Australia, Kimberley
Semotrachia setigera (R. Tate, 1894) Australia, Finke River11 mm
Baudinella setobaudinioides F. Köhler, 2011 Australia, Augustus Island
Kimberleytrachia setosa F. Criscione & F. Köhler,2015 Western Australia, Kimberley
Amphidromus setzeri N.N. Thach, 2015 Vietnam28 mm
Rhagada setzeri W.J.M. Maassen, 2009 Indonesia, Flores18,5 mm
Amphidromus severnsi Thach, 2017
Meliobra shafferyi T. Iredale, 1940 Queensland