Fadyenia stevensiana E. Chitty, 1857 Jamaica
Fadyenia stokesiana E. Chitty, 1857 Jamaica
Orobophana stokesii M.C. Neal, 1934 Hawaii
Alcadia striata (J.B.P.A. Lamarck, 1822) Puerto Rico8 mm
Fadyenia stricklandiana E. Chitty, 1857 Jamaica
Helicina subdepressa F. Poey, 1854 Cuba
Helicina subfusca K.T. Menke Puerto Rico
Helicina subglobulosa F. Poey, 1852 Cuba
Emoda submarginata (J.E. Gray, 1824) Cuba22 mm
Helicina subrufa A. Garrett, 1884
Pleuropoma subsculpta M.C. Neal, 1934 Hawaii
Succincta succincta (E.C. Von Martens, 1890) Veracruz, Mexico
Alcadia succinea (L. Pfeiffer) Dominican Republic
Pleuropoma sulculosa C.M.F. Ancey, 1904 Hawaii
Geophorus sulphureus J.T. Kuroda & T. Kano,1941
Aphanoconia suturalis (E.C. Von Martens, 1864)
Fadyenia swiftiana E. Chitty, 1857 Jamaica
Helicina sylvatica D'Orbigny, 1837 Peru6 mm
Helicina syngenes H.B. Preston, 1914
Orobophana tahitensis (W.H. Pease, 1870)
Gemma talamancensis (I. Richling, 2001) Costa Rica9,2 mm
Pleuropoma talusata J. Stanisic, 2010 Australia, Rockhampton
Helicina tamsiana (L. Pfeiffer, 1850) Venezuela
Eutrochatella tankervillii (J.E. Gray, 1824) Jamaica16 mm
Geophorus tantalus P. Bartsch, 1918
Lucidella tantilla H.A. Pilsbry, 1902 Florida
Fadyenia tappaniana (C.B. Adams, 1851) Jamaica
Fadyenia tayloriana E. Chitty, 1857 Jamaica
Tristramia tenuis (L. Pfeiffer, 1849) Mexico, Yucatan
Gemma terryae H.A. Rehder, 1940 Panama, Gulf of Chiriqui
Pleuropoma theobaldiana (G. Nevill & H. Nevill,1878) Seychelles
Alcadia tibai T. Habe, 1976 Japan
Helicina tilei L. Pfeiffer, 1847 Brazil
Emoda torrei J. Henderson, 1909 Cuba
Priotrochatella torrei (W.F. Clapp, 1918) Cuba13 mm