Helix. 
MOLLUSCA. PULMONIFERA. 
m 
Shell depressed, fths of an inch in breadth; brown, variegated, rough. 
Whorls five, nearly flat, carinated. Pillar cavity large, exposing part of the 
inner volutions ; mouth subovate, Animal dark brown ; upper tentacula 
very long, the lower short and slender ; neck shagreened. Is not the Helix 
Somershamiensis of the Reverend R. Sheppard, Linn. Trans, xiv. 159, the 
young of this species ? The shell described by Captain Brown under the 
name Helix cochlea^ Wern. Mem. ii. 528. t. xxiv. f. 10, and by Dr Turton, 
H. terehra^ Conch. Diet. 61. t. xiv. f. 55, found in the garden of Trinity Col- 
lege, Dublin, by Mr Stevens, seems to be aJproduced variety of this shell, the 
eifect of disease in early life. 
Gen. XVIII. HELIX, — Shell globose, aperture without teeth, 
transverse, lunated, 
a. With a pillar cavity. 
* Preceding whorls not exposed hy the pillar-cavity. 
55. H. Pomatia . — Shell inflated, yellowish-brown, with three 
dark longitudinal bands ; wrinkled transversely. 
Cochlea cinerea. List. An. Ang. iii.— Conch, t. 48. f. 46.-^ — H. Pom. Linn. 
Syst. i. 1244. Mont. Test. Brit. 405.— Middle districts of England. 
The shell sometimes attains two inches in diameter. -Whorls 5, rounded. 
Animal dusky grey. Eggs from 25 to 50, deposited in a hole in the earth ; 
when hatched, the shell has one volution and a half.— Previous to winter, this 
species retires to a cavity, which it diggs in the earth by means of its foot, aided 
by the mucus, and closes the aperture of the shell with a calcareous lid. In 
this state it remains torpid until spring. On the continent of Europe the 
animal is used as food. By some it is conjectured that this species was in- 
troduced into England by Mr Howard about the middle of the sixteenth 
century. Two varieties of the shell occur; the first has the whorls disjoin- 
ed and turrited ; the second has the whorls sinistral. 
56. H. Shell white, with interrupted brown bands ; 
peristome, internally, pink coloured. 
MuU. Verm. ii. p. 60.— H. zonaria, Penn. Brit. Zoo\. iv. 137. t. 85. f. 
133 — ^H. cingenda, Mmt. Test. Brit. 418. — H. rhodostoma, Drap. 
Moll. 86.— South of England. 
Shell about fths of an inch in breadth, subpellucid, minutely striated, lon- 
gitudinally and transversely ; the last band, with irregular edges, entering 
the mouth ; mouth wide, rounded, peristome rising on the side of the pillar 
cavity. Animal pale yellow ; tentacula dark coloured, with a dusky streak 
at the base of each, extending backwards on the neck of the animal. 
57. H. suhri^escens. — Shell transparent, horn coloured, with- 
out bands. 
Miller, Annals of Philosophy, vol. xix. p. 379. — Environs of Bristol. 
Shell of 5 whorls, separated by a deep groove ; the apex depressed, the 
edge indistinctly carinated, transversely striated by the lines of growth ; 
mouth rounded externally, narrow near the pillar, where the lip is reflected, 
in part, over the cavity. In none of the specimens in my possession, which 
I owe to the kindness of Mr Miller, has the mouth acquired the peristome 
of maturity. It seems, however, to be a distinct sjjecies. 
K 
