118 
HELICID^. 
Helix lapicida. Linn, S.N. 1. 1241.; Mont, T,B. 435.; Drap, 
p. 111. t. 7. f. 35 — 37. ; Brard,, p. 53. t. 2. f. 14, 15.; Forbes 
and Hanley,, B, M, iv. 65. t. 116. f. 3, 4. — ^Carocolla lapicida. 
Lamarck,, vi. ii. p. 99.; Turt, Man. ed. 1. f. 51. — Latomus 
lapicida. Fitz. Syst 97. — Helicogona lapicida. Ferns, Prod, 
150. t. 66*, f. 6. ; Bisso^ Fur. Merid. iv. 66. — Chilotrema la- 
picida. Leach,, Moll, Syn, 77.; Beck^Ind. 28.— -Helix affinis. 
Gmel. S. N, 3621. — Helix acuta. Ba Costa,, p. 55. t. 4. f. 9. 
— Lenticula lapicida. Held. Isis, 1837, 913. — Helix rhe- 
nania. Hartmann, — List, Conch, t. 3. f. 4.; Pet. Gaz, t. 92. 
f. 11. 
Yar. 2. whitish. Pfeiffer, 2. f. 27. 
In the fissures of limestone rocks, and in woods 
on a chalky soil. 
Animal green or blackish green ; neck granular, 
with two dark streaks ; hinder part of the foot yel- 
lowish. (^Sturm, t. 26.) The jaw is strong, with 
distinct ribs in front and teeth on the edge. 
Shell three quarters of an inch in diameter, finely 
granulated ; volutions five, the outer one sloping on 
both sides so as to form a sharp edge in the middle 
of the margin, which runs spirally round the upper 
volutions and marks their separation by a fine line ; 
umbilicus central, large, and deep ; aperture oval, 
with an indenture or small notch on the inside at the 
outer pointed extremity where the keel commences ; 
the peristome broad, tffin, white, refiected, united 
and detached all round. 
Linnasus, from some fancy, called this shell Lapi- 
cida or stone-cutter. 
The shell is liable to some variations in size and 
colour. It is rarely pale greenish, nearly transparent ; 
it also varies in the distinctness of the brown mar- 
bling. 
The young shells, as in most other Helices^ are 
much more depressed and more strongly keeled. 
