222 



found at Weymouth. We have taken it at Falmouth in 

 Cornwall, and in Devonfliire, about Teignmouth and Daw- 

 liJJi in the fouth, and Biddeford bay in the north : alfo on 

 the coaft of Caermarthenjhirc, fparingly. 



Lister mentions it from Barnjlahlc. 



This fpecies has frequently been confounded with the 

 Volida pallida, but is at once diltinguifhed by not being 

 convoluted, and in the Columella being deftitute of folds. 



Mr. Adams is miftaken in the diflinguifliing charaflers 

 between this and the V. pallida, (Lin. Tranf. vol. iii. p 253. J 

 by faying this has no polifh : his fpecimen muft have been 

 worn. It has not, indeed, fo fine a polifh; but recent 

 fhells poffefs confiderable glofs. 



Do6lor TuRTON has given the B. cylijidracca of Pen- 

 nant, for the B. cylindrica oi Gmeli>: , which is a very 

 different fhell. 



13. 



Umbilicata. ^' ^^^^^^ '^^ oblong-oval, fmooth, white fliell : apex 



Tab. 7. f. 4. rounded, umbilicated : aperture extremely narrow, the 



v/hole length of the fhell, dilating a little at the bafe. 



Length one-eighth of an inch ; breadth one half its length. 



This fhell has much the habit of B. cylindracea, but 

 is not fo cylindric, and is broader in proportion to its 



length. 



We 



