id] 
umbilicated and as well as the pillar pure white. 4... 
0,20. Near Land's End, Cornwall. The shape not 
unlike Iignaria but is conical-oval and the volutions 
more loosely connected. 
B. Hyaura. Turton in Mag. Nat. H. 7.—Oval, 
transparent, smooth, crystalline, the aperture dilated at 
the base, pillar slightly umbilicated; crown flattened, 
channelled, umbonate. Newcastle, not uncommon, 
Land’s End.—Not unlike Umbilicata but is shorter, 
more oval, and the aperture more dilated. 
B. Umaiuicara. Mont. p. 203. t. 7. f. 2.—Turt. 
D. p. 22.—F. p. 293.—Inn. T. 8. p. 129.—D. p. 
497.—Qhblong-oval, smooth, white; apex rounded and 
umbilicated ; aperture extremely narrow, extending the 
whole length of the shell and dilating a little at the 
base. %...0,062. In sand, Falmouth. 
B. Trunoata. ddams in Lin. T. 5. ¢. 1. f. 1,2— 
Mont. p. 223. t.7. f. 5.—F. p. 293.—B. Retusa. 
Tin. T. 8. p. 128.—D. p. 497.—Subcylindric, 
opaque, white, the upper part longitudinally striated, 
the lower plain; apex truncated and largely umbili- 
cated showing the involutions ; aperture linear, dilated 
slightly at the base and contracted most in the middle. 
3. Devon and Cornwall. 
