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 Natura3 ' (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 ludda 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. alliarius, 

 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 

 produced : suture moderately deep, but not channeled : 

 mouth narrow : outer lip sharp, slightly reflected near the 

 pillar: umbilicus open and deep. L. 0*1. B. 0*275. 



Var. viridula. Shell greenish-white. 



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. 



