iH? LAND AND FRESH-WATER MOLLUSKS. 
: Shell with coloured bands,—H. Pisana, H. virgata, and 
HI. caperata 
», uniformly coloured, more or less hairy, at least in 
- the young, re Cartusiana, H. Cantiana, H. 
rufescens, ie concinna, H. hispida, and H. 
sericea 
Shell subglobose, thin, and very transparent,—H. revelata 
5. ‘and H. fusca 
99) Slobosely conteal:® 5.54 2.5) vege wat ie a 
Shell with raised epidermis,—H. aculeata and H. lamel- 
6. lata 
», very large, banded,—HH. arbustorum and H. pomatia 
7. Peristome united all round,— AH. upc pens: 
5 incomplete. .../ 2. 8 
g {Aperture toothed... ... H. obvoluta 
»  withno denticulations, outer lip not reflected, 9 
Shell banded, large... ... LH. ericetorum 
» not banded, —H. rotundata, Hi. rupestris, and H, 
pygmea 
Hetrx aspersa—(Common Snail) (Pl. VIL, 
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. 
Reversed 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 ram’s horn. 
