Sprattia bicarinata (E.A. Rossmässler, 1839) Turkey20,6 mm
Sprattia bicarinata grisea E. Neubert, 1992 Turkey20 mm
Parabalea bicolor (H.A. Pilsbry, 1949) Peru, Junin12,7 mm
Parabalea bicolor undaticosta H. Nordsieck, 2010 Peru14,2 mm
Idyla bicristata (E.A. Rossmässler, 1839) Greece, Mikonos16 mm
Idyla bicristata acuticosta W.A. Fauer, 1993 Greece, Peloponnesus15,8 mm
Idyla bicristata eustropha (A.J. Wagner, 1914) Greece, Skiathos
Idyla bicristata kephissiae (J.R. Roth, 1856) Greece, Levadia14,6 mm
Papillifera bidens (C. Linnaeus, 1758) France15 mm
Papillifera bidens affinis (R.A. Philippi, 1836) Italy, Sicily14 mm
Papillifera bidens circinata (M. Paulucci, 1878) Italy, Sicily12 mm
Clausilia bidentata (H. Strøm, 1765) Spain13 mm
Clausilia bidentata abietina (D. Dupuy, 1850) Spain9,6 mm
Clausilia bidentata crenulata A. Risso, 1826 Croatia12,8 mm
Alopia bielzii (L. Pfeiffer, 1848) Romania16,7 mm
Alopia bielzii clathrata (E.A. Bielz, 1856) Slovakia13,3 mm
Alopia bielzii madensis C.A. Fuss, 1855 Romania16 mm
Alopia bielzii tenuis E.A. Bielz, 1861 Romania16,8 mm
Semirugata bilabiata (G.H. Schubert& J.A. Wagner, 1829) Croatia16,1 mm
Semirugata bilabiata alschingeri (J.G.F. de Charpentier,1852) Croatia
Semirugata bilabiata biasolettiana (J.G.F. de Charpentier,1852) Croatia
Semirugata bilabiata fasceolata (C.A. Westerlund, 1878) Yugoslavia15,8 mm
Tyrannophaedusa bilabrata (E.A. Smith, 1876) Japan, Shiga20 mm
Symptychiella bilamellata H. Nordsieck, 2005
Symptychiella bilamellata costulata H. Nordsieck, 2010 Peru, San Martin
Symptychiella bilamellata gracilicosta H. Nordsieck, 2010 Peru, San Martin
Symptychiella bilamellata laevigata H. Nordsieck, 2010 Peru12,3 mm
Selenophaedusa billeti (H. Fischer, 1898) Vietnam14,9 mm
Agathylla biloba A.J. Wagner, 1914 Albania10,7 mm
Agathylla biloba dabovici R.A.M. Brandt, 1961 Albania10,6 mm
Agathylla biloba martae Z. Eröss & M. Szekeres,1999 Albania10,5 mm
Oospira binaria (P.M. Heude, 1886)
Columbinia binkiae (H.A. Pilsbry, 1949) Peru, Cuzco19,3 mm
Delima binotata (E.A. Rossmässler, 1836) Croatia11,3 mm
Delima binotata consentanea (A. Schmidt, 1868) Yugoslavia14,6 mm