138 



A perfeft and frefli fpecimen of this fize was taken by 

 Mr. Laskey in Jona, one of the Weftern iflands, and from 

 •which the figure was taken. 



If we may judge by the figures ufually referred to, this 

 fpecies appears to vary confiderably ; but we have only 

 quoted ono figure in Cheivinitz which exactly correfponds 

 with urs except in fize. Some have fuppofed it to be a va- 

 riety of Tuth) rugofus but that fhell in all its ftages appears 

 to be deftituteof fpines, and to have a confiderably produced 

 apex. It is faid to inhabit the Mediterranean and Indian feas. 



HELIX, 



Palustris, Helix fragilis, Don. Br. Shells, v. t. 175. f. I. 



p. 370. Helix fontinalis. Don. Br. Shells, v. t. 175. f. 2. 



Helix palustris. Lin. Trans, viii. p. 216. t. 5. f. 8- 



The figure given in the work firfl referred to, is only a 

 full grown palupis, which is not unfrequently marked with 

 a few flight fpiral ridges. 



Doctor Pulteney, as has before been remarked, de- 

 fcribed the young, or fmooth variety as the fragilis, and the 

 larger and older fliells as palujlris; whereas we find the 

 fmooth variety of this fpecies correfponding exactly to that 

 Doctor Pulteney fent to us for his fragilis, figured in the 

 above work under the title oi fontinalis, and is probably the 

 fame as that fo named in the Portland cabinet, where we alfo 

 find pulujlris denominated /rrt^///.y. Helix 



