102 HELICIDJE. 



and conical ; bulbs small ; foot rather narrow in front, swollen 

 and keeled behind" {B.C., vol. i. p. 163) ; lingual 7'ibbon with 

 55 rows of 65 teeth = 3575. 



Shell compressed, rather more convex above than below, 

 moderately thin and glossy, nearly semitransparent, yellowish 

 or brownish horn-colour, rather more polished below than 

 above, except in the umbilical region, which is clouded with 

 opaque white ; marked in the line of growth with tolerably well- 

 defined strias, which are stronger and puckered near the suture, 

 and regularly but faintly striate spirally ; epidennis moderately 

 thick ; whorls 4-5, convex, body whorl about half the size 

 of the shell ; spire slightly produced, apex obtuse ; suture 

 deepish ; mouth roundish, slightly obHque ; outer lip not re- 

 flected ; umbilicus wide and very deep. 



Inhabits woods and hedgerows, under stones and 

 among damp moss and decayed leaves, all over Great 

 Britain. It is a timid species, and often buries itself 

 in the earth. The shell, which resembles that of 

 Z. cellarius, differs from it in the following respects : — 

 It is smaller, rather more convex above and less so 

 beneath, the spire is more produced, the umbilicus is 

 considerably larger and deeper, the mouth less ob- 

 lique, the outer lip not reflected, and the surface, 

 especially above, is of a dullish aspect instead of 

 being brilliantly polished. 



Var. I. niteiis. — " Shell rather smaller and of a lighter colour, 

 with a dull and waxy appearance ; last whorl somewhat larger 

 in proportion to the others, and laterally expanded." H. nitejts, 

 Michaud. Very common, B.C. 



Var. 2. Helmii Gilbertson. — " Shell pearl-white." Preston 

 (Gilbertson), Sevenoaks, Kent (Smith), B.C. Teignmouth, 

 Devon (R. R.). 



The Rev. J. McMurtrie informs me that in Perth- 

 shire he has found specimens of Z. nitididus which 

 emitted a strong smell of garlic. 



