128 
HELICID^. 
broad^ the peristome very thin and not reflected ; 
umbilicus very large, and so open and deep as to 
expose three or four of the volutions. 
This shell varies greatly in colour, being often 
distinctly banded, and at other times quite bandless, 
when it is H. obliterata of Hartmann. The bands 
vary in number, those on the front of the whorls 
being most generally present. It also varies very 
much in size, being sometimes an inch in diameter 
(see Pfeiffer^ t. 2. f. 24, 25.), and at others not one 
third of that size (^Pfe^er^ t. 2. f. 23.), when full 
grown ; the smaller shells are always rather thicker. 
It is always known from II. cespitum of Draparn. 
by the spire being lower and the umbilicus wider. 
Mr. Jeffreys speaks of one with a more produced 
spire found in Iona, Western Islands {lAnn. Trans. 
xiii. 339.); but I have not seen any that agree with 
Draparnaud’s species. 
h. Shell depressed^ perforated or umhilicated^ horn-' 
coloured or brown^ nearly one-coloured ; peristome 
slightly thichened^ rather spread ; periostraca 
pale^ often bristly^ especially in the young ; bristles 
deciduous. Jaw broad^ costated in fronts and 
toothed on the edges. (Hygromanes Ferussac.') 
47. 14, Helix cantiana. Kentish Snail. — Shell 
slightly depressed, subglobose, brittle, semi- 
transparent, pale rosy, with an obscure paler 
band ; region of the aperture rufous-brown ; 
umbilicus small, (t. 3. f. 26.) 
Helix cantiana. Montagu^ p. 422. t. 23. f. 1. 1803 ; Maton and 
Rackety Linn. Titans, viii. 197.; Fer.Prod. 43.; Fortes and 
