Andiniella sztolcmani (W. Polinski, 1921)
Mesophaedusa tabukii (J.T. Kuroda & H. Minato,1985)
Andinia taczanowskii (W. . Lubomirski, 1879)
Hemizaptyx taibuensis C.K. Chang & A. Tada,2005
Formosana taiwanica H.A. Pilsbry, 1901
Grandinenia takagii C.K. Chang, 2004
Grandinenia takagii capreolus H. Nordsieck, 2005
Miraphaedusa takagii H. Nordsieck, 2005
Atractophaedusa takagii H. Nordsieck, 2005
Hemiphaedusa takahashii J.T. Kuroda, 1941
Hemiphaedusa takarai J.T. Kuroda, 1960
Euxina talyschana I.M. Likharev, 1962
Tyrannophaedusa tanegashimae (H.A. Pilsbry, 1901)
Hemiphaedusa tantaensis G.L. Chan & W.L. Wu, 1977
Albinaria tantilla R.A.M. Brandt, 1962
Hemiphaedusa tantilla (H.A. Pilsbry, 1902)
Euphaedusa tau (O. Böttger, 1877)
Euphaedusa tau cetivora (P.M. Heude, 1882)
Scrobifera taurica (L. Pfeiffer, 1848)
Scrobifera taurica brjanskii (O.W. Von Rosen, 1911)
Formosana telum H. Nordsieck, 2003
Cretica tenuicostata (L. Pfeiffer, 1864)
Cretica tenuicostata grabusana (O. Böttger, 1889)
Cretica tenuicostata omalica (C.A. Westerlund, 1884)
Constricta tenuisculpta (FOSSIL) (A.E. Reuss, 1861 †)
Albinaria terebra (L. Pfeiffer, 1853)
Albinaria teres (G.A. Olivier, 1801)
Albinaria teres distans (L. Pfeiffer, 1864)
Albinaria teres extensa (L. Pfeiffer, 1864)
Albinaria teres manselli (O. Böttger, 1883)
Albinaria teres nordsiecki A. Zilch, 1977
Albinaria teres subcostata A. Zilch, 1977
Albinaria teres vermiculata (O. Böttger, 1883)
Albinaria teres xerokampensis V. Wiese, 1990
Oospira tetraptyx H. Nordsieck, 2003