HELICID^E. 145 



Turton, Man. ed. 1. f. 26.; Brard, p. 24. t. 1 f. 

 6., not Mutter ; Ferus. Prod. 43. 



Helix pallida. Don. Br. Shell t. 157. f. 2. 



In hedges in sandy and chalky districts. 



Animal grey, above warty, brown. 



Shell about three quarters of an inch in diameter, 

 irregularly striate transversely, thin and 

 |^ nearly transparent, of a pale yellowish- 

 white or lead-colour, rufous about the 

 mouth and underneath ; the lower volu- 

 tion tumid and well rounded, not carinated, but mostly 

 marked with an obscure pale band in the middle ; 

 aperture semielliptic, as wide as long, with a thin but 

 not reflected margin ; the internal rib white or rosy ; 

 umbilicus small. 



The young shells are very pale, pellucid, and with 

 a rather hispid periostraca. 



From the Helix rufescens it may be distinguished 

 1. by its greater size and convexity ; 2. in not being 

 so strongly and regularly striate ; 3. in wanting the 

 subcarinated ridge on the lower volution; 4. in the 

 umbilicus not being above half the size. 



Ferussac was at first inclined to consider this spe- 

 cies as distinct from any of the continental shells 

 (Journ. Phys. xc. 300.), but he afterwards considered 

 it as a local variety of H. Carthusiana of Drap. All 

 the French specimens I have seen are very different 

 from our shells, and I think they want further ex- 

 amination ; at any rate Lister's and Montagu's names 

 have the priority, and H. Carthusiana was used by 

 Miiller for another species, for which it should be 

 retained. 



H 



