Poteria adamsi P. Bartsch, 1942
Ostodes adjunctus A. Mousson
Aperostoma agassizi C. de la Torre, P. Bartsch& J.P.E. Morrison, 1942
Aperostoma allantayum P. Bartsch& J.P.E. Morrison, 1942
Neocyclotus amazonense (P. Bartsch& J.P.E. Morrison, 1942)
Amphicyclotus amethystinus (R.J.L. Guppy, 1868)
Cyclopedus anselini O. Gargominy & I.V. Muratov,2012
Ostodes artensis (R.P. Montrouzier, 1859)
Calacyclotus atratensis P. Bartsch& J.P.E. Morrison, 1942
Poteria aulari H.B. Baker, 1923
Cycladamsia bairdiana (E. Chitty, 1857)
Cyclochittya balnearis (P. Bartsch, 1942)
Aperostoma balsasense P. Bartsch& J.P.E. Morrison, 1942
Lagocyclus bartletti (C.B. Adams, 1870)
Amphicyclotus beauianus (S.A.A. Petit De La Saussaye, 1853)
Poteria bejumensis H.B. Baker, 1923
Neocyclotus bisinuatus (E.C. Von Martens, 1864)
Neocyclotus blanchetianus (S. Moricand, 1833)
Neocyclotus bogotense (L. Pfeiffer, 1855)
Amphicyclotus boucardi (L. Pfeiffer, 1856)
Barbacyclus boucardi (G.F. Angas, 1878)
Calaperostoma bourcieri (L. Pfeiffer, 1852)
Poteria bowdenensis (P. Bartsch, 1942)
Dublonia brazieri W.J. Clench, 1949
Neocyclotus braziliensis (J.E. Gray, 1839)
Incidostoma brujense C. de la Torre, P. Bartsch& J.P.E. Morrison, 1942
Poteria burringtoni P. Bartsch& J.P.E. Morrison, 1942
Poteria campeachyi (H.B. Baker, 1934)
Neocyclotus capscelius F.G. Thompson, 1969
Neocyclotus carabobensis (C. de la Torre, P. Bartsch& J.P.E. Morrison, 1942)
Poteria cardozi H.B. Baker, 1923
Incidostoma carmioli (P. Bartsch& J.P.E. Morrison, 1942)
Poteria caymanensis H.A. Pilsbry, 1930
Calaperostoma chanchapoyasense (S.I. Da Costa, 1906)
Cyclochittya chittyi (P. Bartsch, 1942)