B. HumpureystANnum. Bennet in Z. J. 1. p.898. f. 
23.—dn Inst. t. 963. f. 17.—B. Aneiicanum. fF. p. 
343.—Ovate-conical, thin, horn-colored, with eight 
convex whorls, closely and finely striated transversely ; 
striee slightly waved and crossed by very minute longitu- 
dinal lines, dirty flesh-colored (the body whorl frequently 
adorned with three double bands of brown irregularly 
spotted with white) ; pillar smooth and white ; aperture 
horn-colored, the lip white, slightly thickened and re- 
flected at the margin; canal very short with a slight 
tinge of violet behind it. 2...1. Cork, rare. 
B. Ovum. Turton in Z. J. 2. ¢.13.f. 9.—F. p. 348. 
—Oval, inflated, thin, ivory white, smooth ; whorls six, 
and tumid, the spire very short in proportion ; outer lip 
thin and short. 1%...1. Plymouth, very rare. 
B. Acuminatum. Brod. in Z. J. 5. p. 44. t.3.f,. 
1,2.—Conical, subulate, tapering gradually from the 
angle of the body whorl to the acuminated apex, white 
or brownish white; whorls ten, tinged with elevated 
strie, which together with those which are intermediate 
and less elevated have a granular appearance ; epidermis 
brown; mouth milk white with the edge of the tip a 
little reflected and the pillar strongly marked with one 
plait in the advanced stage of growth ; basal furrow 
deep, canal large. 4,70....2. Torquay. 
