ZONITES. 159 



they are said even to attack the larger snails and to enter 

 their shells for that purpose. They frequent dark and 

 damp places, being generally met with under stones, old 

 bricks, and logs of wood which are partly buried in the 

 earth, as well as under and among dead leaves and moss 

 in woods ; and one kind inhabits cellars, vaults, and wells. 

 Some of them give out when touched or disturbed a fetid 

 smell like that of garlic, which may be perceived at a 

 considerable distance. Their eggs are laid in the earth 

 and joined together in small clusters. 



A. Spire depressed : umbilicus open. 

 1. ZoNiTES cella'rius^, Miillcr. 



Helix cellaria, Miill. Yerra. Hist, pt, ii. p. 38. Z. cellarius, F. & H. ir. 

 p. 33, pi. cxx. f. 1-3, and (animal) pi. H. H. H. f. 3. 



Body obtusely rounded in front and narrowing gradually 

 behind, nearly covered with small and rounded but very flat 

 tubercles, rather transparent, slate-colour or bluish-grey, with 

 a faint tinge of yellow : tentacles long and slender, with very 

 large bulbs surmounting the upper pair, bluish or yellowish- 

 grey, finely speckled with black: foot very narrow, pointed 

 and somewhat keeled behind. 



Shell compressed, nearly as convex above as below, thin 

 and brittle, very glossy, semitransparent, yellowish or brown - 

 ish-horncolour above, and whitish with often a greenish tinge 

 underneath, irregularly striate by the curved Hues of growth, 

 which are stronger near the suture, and microscopically stri- 

 ate, like Vitrina, in a spiral direction : epidennis rather thick : 

 whorls b-Q, dilated, regularly increasing in size, the last occu- 

 pying about one -half of the shell : spire extremely short and 

 nearly flat, almost central : suture slight, forming a narrow 

 groove or channel: mouth obliquely and deeply semilunar: 

 outer lip sHghtly reflected : umhilicus broad and deep, ex- 

 posing nearly all the interior of the spire. L. 0-2. B. 0'5. 



Yar. 1. complanata. Shell rather smaller : spire very flat. 

 * Frequenting cellars. 



