HELIX. SNAIL-SHELL. 53 
£nd generally with a greenish cast at the base, with a large 
and deep perforation : spires five or six, the body volution 
finely rounded at the margin: aperture crescent-shaped, 
with the margin thin and not reflecting over the perfora¬ 
tion: diameter nearly half an inch, and about two tenths in 
height. 
Wet woods, and under stones, v. v . 
19. Helix hispida. Bristly Snail-shell. 
Montagu , pi. 23. f. 3— Da Costa , pi. 5. f. 10— Donovan , 
pi. 151. f. 1— Dorset Cat. pi. 21. f. 10. 
Shell very convex, thin, transparent, finely striate 
across, with a small perforation : spires five, rounded, co¬ 
vered with fine short hairs which give it a whitish downy 
cast: aperture roundish erescent-shaped, reflected at the 
angle near the perforation : diameter a quarter of an inch. 
Shady places, and under stones, v. v. 
20. Helix radiata. Radiated Snail-shell. 
Lister, pi. 1053. f. 1 1— Montagu , pi. 24. f. 3 — Da Costa , 
pl.4.f. 15, 16— Dorset Cat. pi. 20. f. 15, 16. 
Shell flattish, a little raised on the upper side and con¬ 
vex beneath, chesnut-brown with paler rays from the 
centre to the margin, with a very large and deep perfora¬ 
tion exhibiting the internal volutions : spires six, well de¬ 
fined by the line of separation, crossed with regular close- 
set fine and rather curved raised lines ; the body volution a 
little flattened, with a very faint keel-like ridge in conse¬ 
quence of the convexity underneath: aperture roundish 
crescent-shaped, not reflected over the perforation: diame¬ 
ter a quarter of an inch. 
Variety , of a greenish-white color, without rays, and se¬ 
mitransparent. 
This very beautiful variety has, we believe, hitherto been 
only found at Dinton, in Buckinghamshire. 
Moist places, and under stones, v. v. 
21. Helix rotundata. Rounded Snail-shell. 
Shell quite flat and level on both sides, dark hom-color 
with transverse chesnut marks or blotches, which however 
r 3 are 
