82 COLIMACEA. 



32. Helix alliaria, pi. IX, f. 3, 4. 



Helix alliaria, Miller, Ann. Phil., N. S., VII, p. 379 ; Tur- 

 ton, Man., p. 56, f. 39; Alder, Mag. Zool. and Bot., II, p. 108; 

 Thompson, Ann. and Mag. Nat. Hist., VI, p. 32; Brown, lUust. 

 Conch., p. 52, pi. 17, f. 48 and 52 ; lb., First Ed., pi. 40, f. 48 

 and 52; Helix nitens, Sheppard, Linn. Trans., XVI, p. 160; 

 Helix fceteda, Stark, Elem. Nat. Hist., II, p. 59; Helix alliacea, 

 Jeflfreys, Linn. Tr., XIII, p. 341 and 511. 



Variety 1. Larger. 



Helix glahra, Studer ; Ferussac, Prod., No. 215; Alder, 

 Mag. Zool. and Bot., II, p. 108; Rossmassler, VIII, p. 36, pi. 

 39, f. 528. 



Variety 2. Greenish-white, and very transparent. 



Shell almost smooth, thin, very glossy, transparent, yellowish 

 or a greenish horn-colour; body large, slightly produced on the 

 sides ; spire small, consisting of three nearly depressed, but 

 deeply divided volutions ; base a little rounded, and whitish ; 

 aperture sublunate and subobhque, clasping about two-thirds of 

 the body ; whole surface covered with nearly obsolete, longitu- 

 dinal wrinkles, which are only visible by the aid of a strong 

 lens ; umbilicus large and deep. Diameter a quarter of an 

 inch ; height about half its circumference. 



This species has much the aspect of H. cellaria, but is only 

 about a third of the size ; it is much more glossy and trans- 

 parent than either the H. cellaria or nitidula, the aperture is 

 less oblique than either, and the umbilicus larger. When alive, 

 it has a fetid smell, somewhat resembling garlic. 



Its habitat is in woods and shaded places, under decayed 

 leaves, &c. ; and on wet banks, among mosses and jungerman- 

 nise. 



This species is met with in all parts of Britain ; and is plen- 

 tiful near Lancaster, the neighbourhood of Durham, and Gis- 

 borne Park, Yorkshire; near Edinburgh, and in Fifeshire, 

 Scotland. Jeffreys says he found it so far north as Lerwick, 

 in Shetland, near the sea shore under stones. Mr. Thompson 

 says that it occurs in Ireland, from the exposed sea shore to the 

 mountain side, and in shaded situations in woods. The green 

 variety is the most common in Ireland, as well as in Scotland. 

 33. Helix nitidula, pi. IX, f. 5, 6. 

 Helix nitidula, Drapernaud, p. 117, pi- 8, f. 21, 22; Gray, 



