HELIX. 59 



apex brown or horn-coloured, a little blunt. Whorls five 

 to six, rather convex, gradually increasing, the last a little 

 deflected. Aperture rounded, lunate, generally about 

 equal in breadth to half the basal diameter, not quite so 

 high ; dirty red or purplish liver colour, usually with a 

 whitish thread-like elevation surrounding it. Peristome 

 acute, not reflected, except upon the columella. Base de- 

 cidedly convex, umbilicus deep but not large. 



This species varies very much in size ; half an inch is 

 the diameter of our larger specimens, but individuals 

 measuring three quarters of an inch are likewise recorded. 

 The diversities of colouring which it exhibits are very 

 remarkable ; among them we may reckon a dark brown 

 variety with a single white band, an opaque white one 

 with transparent, colourless zones, &c. 



The animal is pale on the sides, purplish on the neck 

 and head. 



This snail is found in prodigious numbers on many 

 chalk and limestone districts, and on sandy places in their 

 neighbourhood. It also afi^ects the neighbourhood of the 

 sea. Though local, it occurs in most parts of Britain, 

 the north of Scotland excepted. It is widely diffused 

 through Central and Southern Europe. 



H. CAPERATA, Montagu. 



Depressed, pallid, brown ; banded, with regular close-set raised 

 wrinkles ; body slightly angulated at the periphery ; mouth very 

 small ; outer lip edged with white internally ; umbilicus mode- 

 rately large. 



Plate CX VI I. fig. 7. 



Helix cwperata, Mont. Test. Brit. p. 430, pi. 11, f. 11. — Maton and Rack. 

 Trans. Linn. Soc. vol. viii. p. 196. — Dorset Catalog, p. 53, 

 pi. 19, f. 20. — TuRT. Conch. Diction, p. 51. — Fleming, 



