ZONITES. 161 



the body appearing through the shell. A specimen in 

 my collection has the outer or last whorl marked by a 

 rufous band between the suture and the periphery. 



Linne does not appear to have known this common 

 species. Much confusion has been caused by the post- 

 humous editor of his ' Systema Naturae ' (Gmelin) care- 

 lessly changing the name which Miiller gave to a differ- 

 ent species of Helix from nitida to nitens, and applying 

 the latter name to the present species. This is the 

 Helix lucida of Pulteney^ but not of Draparnaud^ and 

 the H. nitida of the last-named author. 



2. Z. allia'rius "^^ Miller. 



Helix alliaria, Mill, in Ann. Phil, new ser. iii. p. 379. Z. alUarius, F.& H. 

 iv. p. 34, pi. cxx. f. 5, 6. 



Body resembling that of Z. cellarius ; but it is of a much 

 darker colour, and the tentacles are shorter in proportion. 



Shell more convex above and less so below than in the 

 last species, rather more solid and glossy, of a darker colour 

 on the upper side and not so white underneath, sometimes 

 marked with a few indistinct spiral lines : whorls 5, rather 

 convex, often irregularly coiled, the last not so large in pro- 

 portion to the others as in Z. cellarius : spire somewhat pro- 

 duced : suture moderately deep, but not channeled : mouth 

 narrow : outer Up sharp, slightly reflected near the pillar : 

 umbilicus open and deep. L. 0"1. B. 0'275. 



Yar. viridula. Shell greenish- wbite. 



Habitat : Under stones on hills and open spots, as 

 well as among sand-hills ; having an equally wide distri- 

 bution with the last species, but more local. The variety 

 is from Northumberland (Alder) ; Kent (Smith) ; So- 

 merset (Norman) ; Cork (Humphreys) ; Belfast (Thomp- 

 son) ; Lincolnshire, Salop, Zetland, and Co. Tyrone 

 (J. G. J.). This species is one of our upper tertiary 



* Garlicky. 



