Drymaeus subventricosus S.I. Da Costa, 1901
Drymaeus succinea H.A. Pilsbry, 1901
Rabdotus sufflatus A.A. Gould, 1859
Mesembrinus sulcosus (L. Pfeiffer, 1841)
Mesembrinus sulphureus (L. Pfeiffer, 1857)
Multifasciatus superbus W.K. Weyrauch, 1967
Drymaeus surinamensis J.H. Vernhout, 1914
Drymaeus sykesi S.I. Da Costa, 1906
Bostryx tabulatus P.M.A. Morelet, 1860
Bostryx tabulatus scalaricostus P.M.A. Morelet, 1860
Naesiotus tanneri W.H. Dall, 1895
Naesiotus tanneri bartolomensis J. Vagvolgyi, 1977
Naesiotus tanneri edenensis J. Vagvolgyi, 1977
Berendtia taylori (L. Pfeiffer, 1861)
Mesembrinus tenuilabris (L. Pfeiffer, 1866)
Bulimulus tenuissimus (A.V.M.D. D'Orbigny,1835)
Bulimus terebellatus (FOSSIL) J.B.P.A. Lamarck, 1804 †
Kora terrea (L.R.L. Simone, 2015)
Neopetraeus tessellatus (R.J. Shuttleworth, 1852)
Scutalus thamnoicus (A.V.M.D. D'Orbigny,1835)
Bulimulus thoreyi H.H. Beck, 1837
Drymaeus tigrinus S.I. Da Costa, 1898
Bostryx torallyi (A.V.M.D. D'Orbigny,1835)
Bostryx tortoranus A. Doering, 1879
Naesiotus tortuganus W.H. Dall, 1893
Mesembrinus totonacus H. Strebel, 1882
Mesembrinus translucens (W.J. Broderip, 1832)
Mesembrinus translucens alternans (H.H. Beck, 1837)
Mesembrinus translucens panamensis (W.J. Broderip, 1832)
Drymaeus translucidus W.K. Weyrauch, 1967
Bulimulus transparens L.A. Reeve, 1849
Drymaeus tribalteatus (L.A. Reeve, 1848)
Naesiotus trichodes (A.V.M.D. D'Orbigny,1835)
Bostryx tricinctus L.A. Reeve, 1848
Drymaeus tricingulatus (H.E. Anton, 1839)