HELIX. 
109 
mutabills part. Hartm. N. alp. i. 242. — Helicogena nemo- 
ralis. Risso^ Eur. M. iv. 60. — - Caepaea nemoraiis. Held. 
Jsis, 1837,910. — Helix subglobosa. Binney.^ Boston Jour. 
N. H i. 485. f. 7. 
Inhab. woods and hedges. 
Animal dirty or yellowish grey ; head, tentacles, 
and two streaks from the tentacles blackish {Sturm, 
t. 24.). Jaw strong, costated, and toothed. 
Shell hardly an inch in diameter, and about three 
quarters high, glossy, semitransparent, finely striate ; 
spire composed of five rounded volutions ; aperture 
semielliptic, longer than wide, the peristome produced 
at the pillar in a nearly straight line, where it is flat- 
tened and thickened, surrounded by a chocolate or 
reddish-brown border. 
The shell varies — 
1. Greatly in the intensity of the colour, being 
sometimes pellucid white, yellow, reddish, or brown. 
2. In being plain, or marked with five or fewer 
bands (some of the bands being deficient). 
3. In the bands varying very considerably in 
breadth, being sometimes narrow, at others broad, 
when two or more of them are often confluent. 
4. The bands are generally black or brown, but 
sometimes pellucid and nearly^ colourless. 
5. In size, according to the abundance of food, or 
locality. 
Monstrosities, with the whorls much produced, or 
even detached from one another, or turned in the 
contrary direction, sometimes occur. (See Ferussac, 
Hist. Moll t. 34. f. 8, 9. t. 32. tz. f. 2.) 
Mr. Sheppard believes that the plain sort {H. ne- 
moraiis Shepp.), the one-banded {H. cincta Shepp.), 
