79 
distinct species, but the extended outer lip appears to be a 
distinguishing character. It is a siliceous cast which not 
being quite smooth, seems unfinished ; it was sent me from 
Blackdown by Miss Hill, where it occurred among shells 
hitherto supposed to be of marine origin. It has however 
somewhat the appearance of Turbo canalis of Montagu, and 
may therefore possibly be a marine shell. 
VIVIPARA lenta. 
TAB. XXXI.—Fig. 3. 
Helix lenta. Brand. f. 60. 
Spec. Cuar. Smooth, volutions five or six, scarcely 
angular. Lines of growth occasionally con- 
spicuous. Aperture nearly round, entire. 
a 
Spine rather long : shell thickish, an inch long, not half an 
inch wide. 
This shell is found at Hordwell and Barton Cliffs; I am 
indebted to the Rev. W. Bingley for the specimen figured. 
The figure in Brander is from a specimen with a broken 
mouth, the mouth is also engraved rather too round, giving 
it too much the air of a Turbo, otherwise the engraving is 
excellent. 
