112 LAND AND ERESH-WATER MOLLUSKS. 
f Shell with coloured bands,— II. Pisana , H. virgata, and 
| II. capemta 
4 J „ uniformly coloured, more or'less hairy, at least in 
the young, —if Cartusiana , II. Cantiana , if 
rufescens , if. concinna , if. hispida , and if. 
w sericea 
( Shell subglobose, thin, and very transparent,— II. revelata 
5. < and if. fusca 
( „ globosely conical . 6 
( Shell with raised epidermis,—if. aculeata and if lamelr 
6. < lata 
( „ very large, banded,—if. arbustorum and if pomatia 
* ( Peristome united all round, —if. pulchella andff lapicida 
\ „ incomplete .. ... 8 
g ( Aperture toothed . H. obvoluta 
\ „ with no denticulations, outer lip not reflected, 9 
T Shell banded, large . if ericetorum 
9. < „ not banded,—if rotundata , if. rupestris , and if. 
( pygmcea 
Helix aspersa—( Common Snail) (PI. VII v 
fig. 57).—The shell of this species is globular, 
with a wrinkled surface; the colour is yellowish- 
brown, with five spiral dark bands, traversed 
by white zigzag streaks; the whorls are four in 
number, and the aperture is obliquely oval, with 
a white reflected lip. It exhibits great variation 
in colour and marking, but its wrinkled epidermis 
is a sufficiently distinctive feature. 
Beversed monstrosities occur, as also others 
with an elongated spire, with the whorls pro¬ 
duced and separated from one another, so that 
the shell resembles a rands horn. 
