74 GASTEROPODA. HELICIDZ. 
Shell with fine whorls. Aperture approaching to round ; 
very slightly reflexed anteriorly. 
Colour whitish, or fuscescent, without bands; with one or 
more obscure bands of white ; or with five or six bands of fus- 
cous brown. These are subject to all the usual varieties that 
occur in banded shells. 
This species, which shows the generic characters in their 
highest state of development, inhabits dry sandy districts and 
heaths in many parts of Britain, and is found in the greatest 
profusion. 
2. ZONITES RADIATUS. 
Z. testa rufescente-grisea, subcarinata, ad dextram purpureo- 
badio radiata, anfractibus transversim sulcatis. 
Helix rotundata, Mill. Verm. Hist. 231; Drap. Hist. des 
Moll. 114, pl. 8, figs. 5-7; Dill. Dese. Cat. 891. 
Helix radiata, Mont. Test. Brit. 432.—Suppl. t. 24. fig. 3; 
M. § R. Trans. Linn. Soc. vin. 199; Flem. Edinb. Encycl. 
vu. 80; Turt. Conch. Dict. 53. 
Helix perspectiva, Megerlé, Berl. Mag. 
(3. testa albida, immaculata. 
Habitat inter muscos, et sub lapidibus et ligno putrido passim. 
Shell rufescent grey, very slightly carinated, its left side 
elegantly rayed with purple-chestnut ; whorls grooved trans- 
versely. 
This elegant species is found in every part of Britain, inha- 
biting moss, lurkmg beneath stones, on dead trees, or in cre- 
vices of old walls and rocks. 
The carinated appearance is not unfrequently evanescent, or 
nearly so, especially in very old specimens of the shell. The 
white variety was first communicated to me by my kind friend, 
the Provost of Eton, who found it near Dinton Hall, in Bucks. 
I have since found it sparingly on the banks of the Thames. 
3. ZONITES RUPESTRIS. 
Z. testa brunnea, anfractibus transversim striolatis; apertura 
subcirculari. 
Helix umbilicata, Mont. Test. Brit. 434. t. 13. fig. 2; M. & 
