Episcynia stenomphala (J.C. Melvill, 1910)
Circulus stephani E. Rolán & P. Ryall, 2002
Vitrinella stephensae (F.C. Baker, G.D. Hanna& A.M. Strong, 1938)
Cochliolepis striata (W.H. Dall, 1889)
Vitrinella striatella (S.M. Souverbie& R.P. Montrouzier, 1870)
Circulus striatus (FOSSIL) (R.A. Philippi, 1836 †)
Circulus striatus W.M. Gabb, 1873
Cyclostremiscus striatus E.A. Kay, 1979
Lydiphnis strongi H.A. Pilsbry & A.A. Olsson,1952
Solariorbis strongylus (FOSSIL) W.P. Woodring, 1957 †
Tornus subangulatus A. Adams, 1863
Solariorbis subangulatus (FOSSIL) Meyer, 1885 †
Tornus subcarinata P. Lozouet, 1998
Circulus subcirculus (FOSSIL) (A.E.M. Cossmann& M.A. Peyrot, 1917 †)
Elachorbis subedomita (FOSSIL) C.R. Laws, 1936 †
Vitrinella subquadrata P.P. Carpenter, 1857
Teinostoma substriatum P.P. Carpenter, 1857
Elachorbis subtatei (H.H. Suter, 1907)
Pygmaeorota sulcata (A. Adams, 1850)
Teinostoma sulcatum (H.F. Carpenter, 1857)
Cyclostremiscus suppressus (W.H. Dall, 1889)
Circulus supranitidus (S.V. Wood, 1848)
Teinostoma supravallatum (P.P. Carpenter, 1864)
Cochliolepis surinamensis C.O. Van Regteren Altena,1966
Teinostoma sychnum (FOSSIL) W.P. Woodring, 1957 †
Cyclostremiscus taigai (L.G. Hertlein& A.M. Strong, 1951)
Anticlimax tamarae F. Rubio & E. Rolán, 2014
Elachorbis tatei (G.F. Angas, 1878)
Teinostoma tectispira H.A. Pilsbry, 1953
Teinostoma tectum H.A. Pilsbry& J.T.L. McGinty, 1945
Anticlimax tentorii F. Rubio & E. Rolán, 2014
Cyclostremiscus tenuisculptus (P.P. Carpenter, 1864)
Circulus tenuistriatus (FOSSIL) (G.P. Deshayes, 1862 †)
Circulus teramachii (T. Habe, 1958)
Solariorbis terminalis (H.A. Pilsbry& J.T.L. McGinty, 1946)