84 MALACOZOA. GASTEROPODA. PULMOBRANCHIATA. 



This variety is somewhat larger than the maritima, with the 

 spire more convex. The animal, which is remarkable for its 

 nearly uniform hyaline tint, tinged with yellow, emits a faint 

 alliaceous odour, like that of Helix alliaria, which is perceptible 

 even after it has been killed in hot water. This circumstance, 

 the more elongated tentacula and foot, the transparency of 

 the shell, and the thin margin of its aperture, might induce 

 one to think it distinct from Helix hortensis ; yet I cannot 

 find any decided differences in the form of either the animal 

 or the shell. The white bands, generally five, vary to four, 

 six, or seven. 



First found by me, while with Dr. Fleming and Mr. Leslie, 

 on the sand hillocks near Black Dog Farm, in the Parish of Bel- 

 helvie. It is there abundant, and unmixed with any other 

 variety. 



Helix hortensis. Muller, Verm. Terrestr. et Aquat. ii. 52. 

 Helix hortensis. Drap. 95. PI. 6. f. 6. Helix hortensis. Mont. 

 Test. Brit. 412. Helix hortensis. Grey's Turt. 130. Helix hor- 

 tensis. Flein. Brit. Anim. 264. Helix hortensis. Lamk. Syst. vi. 

 2. SI. 



4. Helix caperdta. Wrinkled Snail. 



Shell moderately depressed, somewhat hemispherical, deeply 

 and regularly striate ; the whorls six, convex, and very dis- 

 tinctly separated by the suture, the last whorl subcarinate ; the 

 base convex, with a rather large and deep umbilicus ; aperture 

 semilunar, oblique, with the margin thin and direct ; the colour 

 yellowish-grey, irregularly spotted or banded with brown above, 

 the keel of the last whorl whitish, the base with faint interrupted 

 brown bands ; the peristome whitish. Diameter four-twelfths 

 and a-half, height two-twelfths and three-fourths. 



It varies greatly in its colour-markings; but is always 

 easily distinguishable from any other species. 



Animal with the foot compressed, oblong, obtusely pointed 

 behind, transversely rugose on the margins, pale-yellowish, 

 with series of minute prominences on the upper part ; the 

 neck pale greyish-yellow with oblong tubercles in longitudinal 

 series, and two lateral bands of dark grey, the upper tenta- 

 cula dusky-grey, granulated, capitate ; the lower very short, 

 clavate, light-grey. Some individuals have the foot pale bluish- 

 grey, margined with darker ; the neck and tentacula dark 

 bluish-grey. Others have the neck and tentacula black. 



Found in June, 1842, by Miss Isabella Macgillivray, by an 

 old granite wall near the Brick-kilns at Old Aberdeen ; and 



