helicidjE. 169 



whorls four, under-side slightly tinged with opake 



white ; umbilicus rather large. 

 Helix alliaria. Miller, Ann. Phil. n. s. vii. 379. ; 



Alder, Cat. 12. n. 48.; Mag. Zool.8fBot.il 



108.; Turton, Man. ed. i. 56. f. 39. 

 Helix nitens. Sheppard, I Ann. Trans, xvi. 160. 

 foetida. Stark, Elem. N. Hist. ii. 59. ; Brown, 



Brit. Shells, t. 40. f. 48—52. 

 Helix alli^cea. Jeffreys, Linn. Trans, xiii. 341. 



511. 

 Helix nitida. Shepp. Linn. Trans, xiv. 160.(?) 

 Var. 1., transparent greenish white. 

 Var. 2., larger. Alder, Mag. Zool. 8f Bot. ii. 108. 

 Helix glabra. Studer, Ferus. Prod. n. 215. 



Inhab. woods, under stones, decayed leaves, and 

 moss. 



Animal black ; tentacles short, cylindric, emitting 

 a strong smell of garlic when irritated. 



Shell about one quarer of an inch in diameter. 

 It differs from Z. cellaria in being not above one 

 third the size, and more convex, in having the aper- 

 ture less oblique, the umbilicus larger, and the white 

 on the under side not so well denned ; from Z. nitidida, 

 in being smaller, and in its bright glossy lustre and 

 transparency. 



This species was first discovered by the late Mr. 

 Miller of Bristol. 



Dr. Johnston does not consider H. nitida and H. 

 nitidula as distinct from II. alliaria of Miller ; he 

 found all under one stone, selected four nearly of one 

 size, and none of them had any garlic smell when 

 alive ; but on immersing them one by one in hpt 

 water, two emitted a very strong garlic-like odour, 



I 



