60 
HELIX. SNAIL-SHELL. 
come obsolete : spires five or six, the larger ones rounded', 
but a little flattened near the line of separation, irregularly 
wrinkled longitudinally, and crossed by very fine obsolete 
circular lines, so as to give them a minutely reticulate apl 
pearance when examined by a glass; the tip a little flat¬ 
tened, and defined by a blade spiral line; the base slightly 
but deeply perforated, whitish, with generally a band in 
the middle composed of two or three narrow chocolate 
zones, the interstices of which are of a reddish color: apen 
ture crescent-shaped, inclining to ohlong, the margin thin 
and reflected over the perforation, with usually a raised line 
round it on the inside near the edge, as in H. virgata. 
Sometimes it is found nearly plain, or with only a few 
faint girdles on the body volution; but may dways be di¬ 
stinguished from H. virgata, by its larger size and propor¬ 
tional breadth, the flattened top and slightly flattened vo¬ 
lutions, and its numerous but very narrow zones: breadth 
three quarters of an inch ; height half an inch. 
Dry sandy heaths near the sea. v. v. 
14. Helix virgata. Zoned Snail-shell. 
Lister , pi. 59. f. 56— Montagu, pi. 24. f. 1— Da Costa, 
pi. 4. f. /—Dorset Cat. pi. 20. f. 7— Pennant, pi. 88 . f.3. 
Helix zonaria. Donovan, pi. 65. 
Shell cpnvex at top, semitransparent, irregularly wrin- 
kled across,with a deep but narrow perforation ; spires sir, 
rounded and well defined, white with a rufous tinge; the 
body volution with a single purplish-brown band winding 
round the middle and continuing at the base of the rest 
quite up to the top, beneath which is generally a smaller 
white one ; at the under part are three or four very fine 
circular zones, and often two or three broader ones at the 
base, sometimes interrupted with white spots, none of them 
however close to the perforation: aperture 3 omewhatorbi¬ 
cular, oblique, the margin reddish and reflecting over the 
perforation, within pale purplish-brown, with a white or 
purplish thread-like raised line round the margin and a 
little within it: length about half an inch 3 height hardly as * 
much. 
Variety A. 
Pale rufous-brown or greyish, with an oh: 
seme 
. 
