OO BTJLIMULIIS. 



BUCCINUM. Linn. Fam. Purpurifera, Lam. Entomostomata, 

 Bl. — Descr. Subovate or oblong, covered witb an epidermis; 

 spire turritedy consisting of few whorls ; aperture wide, subovate, 

 terminating anteriorly in a very sbort canal, reflected over the 

 bact ; outer lip simple, slightly reflected ; inner lip spread over 

 a portion of the body whorl, terminating in a thick, smooth 

 columella ; operculum horny. Hab. British Seas, Northern 

 Ocean, and Coast of Africa. Most of the fossil species occur in 

 Crag, some in upper marine formation and London clay. — Obs. 

 There are considerable diflSculties in keeping this genus distinct 

 from others nearly related to it, into which many of the species 

 run by imperceptible gradations. The genus Nassa has been 

 separated on account of the little notch, which terminates the 

 columella. Some species of Terebra so nearly resemble the 

 Buccina, that it is difficult to say where one genus ends and the 

 other begins. Mr. Eeeve*s Monograph contains 118 species. 

 T. Buccinoides, fig. 427. Buecinum TJndatum, the common 

 Whelk, PL xix. fig. 421. 

 BUFO. Montf. A generic division of the species composing 

 Eanella, characterized as having the shell not umbilicated. The 

 above character is scarcely sufficient in some cases, even as a 

 specific distinction. Hanella Eanina, PL xvii. fig. 394. 

 BULBUS. Humph. Eapelia, Swainson. A genus formed for 

 the reception of Pteula papyracea, Auct. (fig. 389), and similar 

 species. E,apanus, Montf. 

 BULIMIMA. Montf. A genus of microscopic Foraminifera. 

 BULIMULUS. Leach. 1826; Fam. Colimacea, Lam. The author 

 is unacquainted with the characters by which the two or three 

 species included in this genus are to be distinguished from Bu- 

 linus. "We have represented, (fig. 283,) Bulimulus trifasciatus. 

 Leach, (Bulinus Guadaloupensis, Auct.) This occurs in the same 

 limestone which encloses the half fossilized human remains from 

 the Grrand Terra of Gruadaloup. Several species are described by 

 the Eev. L. Gruilding in the Zoological Journal, namely, the B. 

 Undulatus, Antiguensis, and Proteus ; but neither from the shells 

 themselves, nor from the figures of the animal, can we draw any 



