If this (hould be Lister's fliell, of which there is very 

 little doubt, we are informed it is found in the rocky 

 parts, over the torrents about Cravan in York/hire. Da 

 Costa quotes the Fhilofophical Tranf actions. No. 105. 

 fig. 8.— Wallace Ork. p. 39. — and Morton North- 

 amp, p. 415. for his Turbo Rupium; and it is probable 

 they belong either to this, or to the Helix luhrica, but 

 we are in doubt to which the fynonyms (hould be placed. 



The ohfcura in its young flate, or before the mouth is 

 formed, has much the appearance of a pyramidal Tro- 

 chus. In this ftate we fufpeft Schr deter in his Erd- 

 conchylien, has defcribed it, p. 141, tab. 1, fig. 8. and 

 which MuLLER afterwards defcribed under the title of 

 Helix ventricofa, p. 102. No. 301. and Gmelin p. 3661. 



Animal pale-brown; beneath lighter: tentacula lonx ; 

 eyes placed at the tips of the two longefl. 



17. 

 Helix fubcylindrica. Pult. Cat. Dorfet. p. 49. SuBcyLikoRiCA 



Lin. Syft. p. 1248 .? 

 Gmel Syjl. p. 3652. 118 ? 



H. with a cylindric, imperforated, fub-pellucid, light 

 chefnut-coloured fhell, with four fpires, terminating in 

 an obtufe, fmooth, button-like whirl, as if truncated; 

 the volutions a little rounded, and well defined by the 

 feparating line, furnifhed with clofe-fet, rib-like, lon- 

 gitudinal flriae, in fome the whole length ; others princl- 



E e e pally 



