194 HELICIDJE. 



Dr. Leach says that Mr. Gibbs first discovered this 

 species to be an inhabitant of Britain, in 1814, and com- 

 municated it to Col. Montagu, who named it in his 

 MS. "Helix GMsii" It is the H. Carthusianella of 

 Draparnaud, who mistook Miiller's species for H. Can- 

 tiana. It differs from the last-mentioned species in the 

 shell being of a much less size, more solid and nearly 

 opaque, and in the spire being more depressed and the 

 umbilicus much smaller and more contracted. 



All authors subsequent to Muller (with the exception 

 of Gmelin and Poiret) have written the specific name 

 with an " h," i. e. Carthusiana. The name of the religious 

 Order is said to have been derived from Cartuse or Char- 

 treuse, a hamlet near the famous Monastery; and in 

 Ducange's Glossary the monks are called "Cartusienses, 

 a Cartusiensibus montibus." I therefore think the ori- 

 ginal spelling of Cartusiana ought to be retained. 



9. H. RUFES'CENS*, Pennant. 



H. rufescens, Penn. Brit. Zool. iv. p. 134, pi. Ixxxv. f. 127 ; F. & H. 

 iv. p. 66, pi. cxviii. f . 4, 7. 



BODY yellowish, grey, or brown, of various degrees of in- 

 tensity, with dark-brown stripes running along the neck and 

 on to the tentacles, rather strongly tubercled : tentacles of the 

 same colour as the rest of the body ; upper pair long and 

 slender, lower ones very short; foot of a lighter colour, some- 

 what narrow and slender, but short. 



SHELL subconic, compressed above and angularly rounded 

 below, rather solid and nearly opaque, scarcely glossy, light 

 ash-grey with generally a reddish-brown hue, sometimes trans- 

 versely streaked with the last colour, and often marked with 

 a white spiral band which encircles the last whorl, finely and 

 closely but irregularly striate transversely : periphery obtusely 

 keeled : epidermis not very thin : whorls 6-7, depressed above 

 and convex beneath, the last occupying rather more than half 



* Of a reddish colour. 



