Thiara schoutedeni P. Dautzenberg & J. Germain,1914
Stenomelania scipio (A.A. Gould, 1847)
Thiara scitula A.A. Gould, 1847
Sermyla sculpta (L.F.A. Souleyet)
Bayania semidecussata (FOSSIL) (J.B.P.A. Lamarck,1804 †)
Tarebia semigranosa (G. von dem Busch)
Sheppardiconcha septencincta (FOSSIL) Roxo, 1937 †
Thiara setosa W.J. Swainson, 1825
Melanoides shahdaraensis Y.I. Starobogatov& Z.I. Izzatullaev, 1980
Hemisinus siliceus (FOSSIL) J. Brown & H.A. Pilsbry,1914 †
Stenomelania sobria (I. Lea, 1850)
Sheppardiconcha solida (FOSSIL) Wesselingh, 2006 †
Aylacostoma stigmaticum P.H. Scott, 1954
Aylacostoma strigillatum (R.W. Dunker, 1843)
Hemisinus sulcatus (FOSSIL) T.A. Conrad, 1871 †
Bayania sulpiciana (FOSSIL) (G.P. Deshayes, 1862 †)
Melanoides tacita T. Iredale, 1943
Thiara tatei (J.B.P.A. Lamarck, 1816)
Aylacostoma tenuilabris (L.A. Reeve, 1860)
Melania tenuis (FOSSIL) Münster, 1841 †
Hemisinus terebriformis (FOSSIL) A.A. Olsson, 1931 †
Aylacostoma ternatanum Unknown Author
Thiara terpsichore (A.A. Gould, 1847)
Melania texata (FOSSIL) Münster, 1841 †
Thiara thiarella (J.B.P.A. Lamarck)
Sengoeria thracica (FOSSIL) M. Harzhauser, O. Mandic& al., 2016 †
Tarebia tjariangensis (FOSSIL) Martin, 1905 †
Thiara tjemoroensis (FOSSIL) Martin, 1905 †
Melanoides tortuosa (J.G. Bruguière, 1792)
Melanoides torulosa (J.G. Bruguière, 1789)
Melanoides tourainei (FOSSIL) R. Rey, 1974 †
Melanoides tournoueri (FOSSIL) (A. Fuchs, 1877 †)
Melanoides truncatelliformis J.R. Bourguignat, 1889
Melanoides tuberculata (O.F. Müller, 1774)
Melanoides tuberculata butiabae G. Mandahl-Barth, 1954