Drymaeus bogotensis L. Pfeiffer, 1855 Colombia
Drymaeus bolivarii (A.V.M.D. D'Orbigny,1835) Bolivia, Cochabamba
Drymaeus bolivianus (L. Pfeiffer, 1846) Venezuela, Merida33 mm
Scutalus bolivianus W.B. Marshall, 1932 Bolivia, Oruro
Naesiotus bombamarcaensis W.K. Weyrauch, 1960 Peru
Bulimulus bonariensis (A.V.M.D. D'Orbigny,1835) Uruguay24 mm
Bostryx bonneti C.M.F. Ancey, 1902 Bolivia21,9 mm
Oxychona boosciana (A.E.J. Férussac, 1821) South America
Bostryx borellii (C.M.F. Ancey, 1897) Bolivia28,8 mm
Mesembrinus botterii J.C.H. Crosse& P.H. Fischer, 1875 Veracruz, Mexico
Drymaeus boucardi S.I. Da Costa, 1907 Panama, Chiriqui26,9 mm
Drymaeus bourcieri L. Pfeiffer, 1853 Ecuador23,9 mm
Drymaeus brachysoma (A.V.M.D. D'Orbigny,1835) Bolivia
Drymaeus branneri F.C. Baker, 1914 Brazil, Madeira
Bostryx breurei J.F. Araya, 2015
Mesembrinus broadwayi (E.A. Smith, 1896) Trinidad11,9 mm
Scutalus broggii H.A. Pilsbry& A.A. Olsson, 1949 Peru, Huacho
Bostryx bromeliarum H.A. Pilsbry, 1930 Peru, Lima
Bulimulus brunoi H.F.A. von Ihering, 1917 Brazil, Trindade Island17 mm
Bulimus buccinalis (FOSSIL) J.B.P.A. Lamarck, 1804 † France, Grignon
Drymaeus bucia L. Pfeiffer, 1859 Brazil
Drymaeus buckleyi (G.B. I Sowerby, 1895) Ecuador27 mm
Bulimulus buenavistensis H.A. Pilsbry, 1897 French Guyana
Mesembrinus bugabensis (E.C. Von Martens, 1893) Panama, Chiriqui26,3 mm
Rabdotus cacoctycus J.F. Mabille, 1895 Mexico
Bulimulus cacticolus L.A. Reeve, 1849 Venezuela24,4 mm
Drymaeus cactivorus (W.J. Broderip, 1832) Colombia28,8 mm
Bostryx calchaquinus A. Doering, 1879 Argentina
Bostryx calderaensis J.F. Araya, 2015
Plicolumna californicus (J.G. Cooper, 1891) USA, California
Vermiculatus caliginosus (L.A. Reeve, 1849) Ecuador35,4 mm
Bulimus calleanus P.M.A. Morelet, 1848 Ivory coast, Abidjan32,1 mm
Naesiotus calvus (G.B. I Sowerby, 1833) Galapagos
Neopetraeus camachoi W.K. Weyrauch, 1967 Peru, Cajamarca
Drymaeus canaliculatus (L. Pfeiffer, 1845) Peru, Piura36 mm