133 CONCHYLIA— D/THFi?^. 33. 



Tab. nost. 11, fig. 1. 2. 

 VeniLs sulcata Montagu, Test. Brit. p. 131. 



Linn. Trans, viii. p. 81, tab. 2, fig. 2. 



Turton, British Fauna, p. 159. 



Pennant, Brit. Zool. iv. p. 203, 



Dillwyn, Descript. Catal. p. 166. 



Turton, Conch. Diet. j). 235. 

 Venus Danmonia. Montagu, Suppl. p. 45, tab. 29, fig. 4. 



Pennant, Brit. Zool. iv. p. 212. 



Dillwyn, Descript. Catal. p. 167. 

 Pectunculus truncatus. Da Costa, Brit. Couch, p. 195. 

 Mus. nost. Devonshire, and Irish coasts. 



Shell in size shape and marking exactly resembling the Crassina 

 Scotica, except that the inner margin is edged with fine teeth, giv- 

 ing an obtuse outline to the circumference. 



Among the polar shells presented to us by Mrs. Griffiths, and col- 

 lected by her son, an oflicer in Captain Parry's late most interesting 

 Toyage of discovery, we have two species much corresponding with 

 our Venus Scotica and Venus sulcata. The teeth are similar, and 

 one has the margin plain, the other notched : but the strice are finer 

 and more numerous, somewhat laminar and not so regular ; the beaks 

 not so much produced, and generally decorticated : they are covered 

 with a blackish-brown epidermis. They are the Venus borealis of 

 Linne, and Chemnitz, vii. p. 26, tab. 39, fig. 412 to 414. 



