106 Mollusca. 



Basistoma, Lea in Am. Phil. Soc Trans. X. 1852. . . GASTEROPODA. 

 Basterotia, (Mayer) HSrnes in Foss. MoU. d. Wien. Tert. Beck. II. 40. 



1 859 BIVALVIA. Foss. 



Batissa, Gray in Ann. Mag. N, h. 2. XI. 38. 1853 BIVALVIA. 



Baudonia, MabiUe in Rer. Mag. d. Zool. XX. 1868. . GASTEROPODA. 

 Beccaria, Trinchese in Ann Mus. Stor. nat. di Genova. 47. 1870. 



GASTEROPODA. 



Beguina, Bolten in Mus. Bolt. 1798 BIVALVIA. 



Bela, Leach. 1818 in Ann. Mag. N. h. 1848 GASTEROPODA. 



Belemnophora, Gray ? Foss. 



Belemnosis, (recte Belemnopsis) E. E. Edwards in Mou. Eoc. MoU. of 



Eu^l. I. 1849 CEPHALOPODA. Foss. 



Belgrandia, Bourguignat in Cat. d. Moll. Foss. diluy. env. de Paris, 



13—15. 1868 GASTEROPODA. Foss. 



Belopeltis, Voltz ? Foss. 



Beloteuthis, Miinster ? Foss. 



Bembicium, Philippi in Menke Zeitschr. 129. 1846. . GASTEROPODA. 



Berendtia, Crosse et Fischer ? 



Binneya, Cooper in Proc. Calif. Ac. N. sc. III. 1 863. . GASTEROPODA. 

 Binovoluta, SchlUter in Syst. Verz. 1838. = Cyphoma, Bolt. 



GASTEROPODA. 



Biradiolites, D' Orb ? 



Bithinella, Moquin-Tandon in Journ. Conch. 239. 1851. CBithynia.") 



GASTEROPODA. 

 Bittium, Leach. 1818 in Ann. Mag. N. h. 1847. . . . GASTEROPODA. 



Bivonia, Gray in Proc Zool. Soc 1847 GASTEROPODA. 



Blainvillia, Hupe in Rev. d. Zool. 219. 1854 BIVALVIA. 



Blanfordia, A. Adams in Ann. N. h. XI. 19. 1863. . . GASTEROPODA. 

 Blaudia, Chitty in Proc Zool. Soo. Lond. 162. 1857. . GASTEROPODA. 

 Blauneria, Shuttleworth InDiagn. n. MoU. VL 148. 1854. GASTEROPODA. 



Bolboceras, Sow ? Foss. 



Bontia, Leach in Conch. ill. 1844. = Periploma, Schnm. . BIVALVIA. 

 Bornella, Gray in Voy. of Samarang. Eig. of Moll. Anim. 107. 1850. 



GASTEROPODA. 



Borsonia, Bellardi. . . . 1846 GASTEROPODA. Foss. 



BorUS, Albers in Heliceen. 141. 1850. (Bulimus.) . . . GASTEROPODA. 

 Bostrychoteuthus, Agassiz. = Cirrhoteuthis, Eschr. CEPHALOPODA. 

 Bostryx, Troschel in Zeitschr. fiir Malac 49. 1847. (Bulimus.) 



GASTEROPODA. 

 Botula, Morch in Cat. Yoldi. II. 35. 1853. (Lithophaga.) . . BIVALVIA. 

 Bouchardia, Th. .Davidson. Soc Geol. d. France Bull. VII. 62—74. 1849. 



BRACHIOPODA. Foss. 

 Bourciera, L. Pfeiffer in Zeitschr. f. Malac 178. 1851. GASTEROPODA. 

 Boysia, Pfeiffer in Zeitschr. f. Malac. 104. 1849. . . . GASTEROPODA. 

 Brachydontes, Swainsou in Treat. Mal. 1840. (Modiola.) . BIVALVIA. 

 Brachyspira, Ffeiffer iu Mou. Hellc IV. 804. (Succinea.) GASTEROPODA. 

 Brachyspira, Ehrenberg 1858. au Pteropodum pulli? CEPHALOPODA. 



Brocchina, Carpenter in Proc. Zool. Soc 1858 GASTEROPODA. 



Broderipia, (Gray) A. Adams. Proc Zool. Soc Lond. Febr. 1850. 



GASTEROPODA. 

 Brondelia, Bourguignat in Rev. Mag. d. Zool. 1862. . GASTEROPODA. 

 Brotia, H. Adams. Proc Zool. Soc Lond. 150. 1866. . GASTEROPODA. 



Bryopa, Gray in Proc Zool. Soc Lond. 307. 1858 BIVALVIA. 



Bryophila, Carpenter in Ann. N. h. XIII. 314. 1864 BIVALVIA. 



