COLIMACEA. 81 



cularly over the great limestone belt which traverses the coun- 

 try. I met with it first in Ireland, in the crevices of a mossy 

 stone, at Clonooney Barracks, King's County. Forbes gives its 

 habitat on walls, near Douglas, Isle of Man. 



Sub-Genus 7. — Hyalinm. — Ferussac. 

 Shell diaphanous, glabrous, hyaline, and shining. 



31. Helix cellaria, pi. IX, f. 1, 2. 



Helix cellaria, Muller, Verm., II, p. 28, No. 280; Lamarck, 

 An. San. Vert., VI, pt. 2nd, p. 91, No. 96; Pfeiffer, I, p. 42, 

 pi. 2, f. 29, 30; Rossmassler, I, p. 70, pi. 1, f. 22; lb., VII, 

 p. 36, pi. 39, f. 527; Alder, Mag. Zool. and Bot., II, p. 108, 

 No. 22; Forbes, Mai. Mon., p. 10; Thompson, Ann. and Mag. 

 Nat. Hist., VI, p. 32 ; Helix nitida, Drapernaud, p. 117, pi. 3, 

 f. 23, 24, 25 ; Brard, p. 34, pi. 2, f. 3, 4 ; Brown, Ency. Brit., 

 6th Ed., VI, p. 458 ; Helix nitens, Maton and Rackett, Linn. 

 Tr., VIII, p. 198, pi. 5, f. 7; Brown, Wernerian Mem., II, p. 

 525 ; Helix lucida, Montagu, Test. Brit., p. 425, pi. 23, f. 4 ; 

 Turton, Man., p. 56, pi. 4, f. 40 ; Zonites lucida. Leach, Moll., 

 p. 10; Helix cellaria, Brown, Illust. Conch., p. 51, pi. 17, f. 

 59, 60 ; lb.. First Ed., pi. 40, f. 59, 60. 



Shell thin, smooth, glossy, and pellucid, of a yellowish-green 

 horn-colour ; body very wide, but short ; spire small, much 

 depressed, and very little elevated above the body, consisting 

 of four volutions, not deeply divided, but well defined by the 

 sutural line, terminating in a blunted apex ; base not much 

 rounded, furnished with a moderately large and very deep um- 

 bilicus, and of a paler colour than the superior portion ; aper- 

 ture luniform, compressed, oblique, its length and width equal ; 

 outer lip thin, and not at all reflected. Varying in diameter 

 from half an inch to three-quarters. 



This species is almost universally diffused throughout Great 

 Britain and Ireland. Its habitat is variable, sometimes being 

 found in cellars, — hence its name, — and at other times lurking 

 under stones on the sides of roads, or in meadows and fields, 

 and always in damp situations. T. W. Warren, Esq., of Dub- 

 lin, possesses some very large specimens, measuring seven lines 

 and a half in diameter, which he found in drains within the 

 City of Dublin. 



M 



