36 



produced at the pillar side, with the margin slight- 

 ly reflected and white, with a white internal rib. 



In wet shady places. 



ff The mouth surrounded internally with a 



rib, and the umbilicus open and central. 

 26. HELIX Carthusiana. Shell slightly depressed, 

 semitransparent, whitish with an obscure paler 

 band ; region of the aperture rufous-brown : um- 

 bilicus small. 



Helix Carthusiana. Drap. p. 102. t. 6./. 33. 



- Brard,p. 24-. t. l.f. 6. 



Helix Cantiana. Montagu, p. 422. t. 13. f. 1. 

 Teba Cantiana. Leach, Mollusc, p. 94. 



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 volution 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. 



From the Helix rufescens it may be distinguished : 

 1, by its greater size and convexity: 2. in not 



