Drymaeus bogotensis L. Pfeiffer, 1855
Drymaeus bolivarii (A.V.M.D. D'Orbigny,1835)
Drymaeus bolivianus (L. Pfeiffer, 1846)
Scutalus bolivianus W.B. Marshall, 1932
Naesiotus bombamarcaensis W.K. Weyrauch, 1960
Bulimulus bonariensis (A.V.M.D. D'Orbigny,1835)
Bostryx bonneti C.M.F. Ancey, 1902
Oxychona boosciana (A.E.J. Férussac, 1821)
Bostryx borellii (C.M.F. Ancey, 1897)
Mesembrinus botterii J.C.H. Crosse& P.H. Fischer, 1875
Drymaeus boucardi S.I. Da Costa, 1907
Drymaeus bourcieri L. Pfeiffer, 1853
Drymaeus brachysoma (A.V.M.D. D'Orbigny,1835)
Drymaeus branneri F.C. Baker, 1914
Bostryx breurei J.F. Araya, 2015
Mesembrinus broadwayi (E.A. Smith, 1896)
Scutalus broggii H.A. Pilsbry & A.A. Olsson,1949
Bostryx bromeliarum H.A. Pilsbry, 1930
Bulimulus brunoi H.F.A. von Ihering, 1917
Bulimus buccinalis (FOSSIL) J.B.P.A. Lamarck, 1804 †
Drymaeus bucia L. Pfeiffer, 1859
Drymaeus buckleyi (G.B. I Sowerby, 1895)
Bulimulus buenavistensis H.A. Pilsbry, 1897
Mesembrinus bugabensis (E.C. Von Martens, 1893)
Rabdotus cacoctycus J.F. Mabille, 1895
Bulimulus cacticolus L.A. Reeve, 1849
Drymaeus cactivorus (W.J. Broderip, 1832)
Bostryx calchaquinus A. Doering, 1879
Bostryx calderaensis J.F. Araya, 2015
Plicolumna californicus (J.G. Cooper, 1891)
Vermiculatus caliginosus (L.A. Reeve, 1849)
Bulimus calleanus P.M.A. Morelet, 1848
Naesiotus calvus (G.B. I Sowerby, 1833)
Neopetraeus camachoi W.K. Weyrauch, 1967
Drymaeus canaliculatus (L. Pfeiffer, 1845)