130 CONCHYLIA— D/TifYi?^. 33. 



Venus subrhomboidea. Montagu, Suppl. p. 49, tab. 28, fig. 2. 



Pennant, Brit. Zool. iv. p. 211. 



Turton, Conch Diet. p. 246. 

 Found by Captain Laskey, in the Firth of Forth. 



Shell half an inch long, and three quarters broad, rounded at one 

 end and truncate at the other, irregularly wrinkled transversely, and 

 crossed by fine longitudinal lines : color white, with a rufous tinge 

 at the truncated side : beaks small, nearly central : hinge with two 

 strong plain teeth in each valve, one of them very oblique. 



Montagu was of decided opinion that this shell is very distinct 

 from any of the varieties of the Petricola Irus, both from the cir- 

 cumstances of the teeth being quite plain, and of the transverse 

 strise being more obtuse and not so laminar. Whether it be an 

 inhabitant of rocks we are unacquainted. It is at present a very 

 obscure species. 



Scotica. Crassina testd cordato-orhiculari subcompressd, costis transversis pa- 



2. .... 



rallelis rotundatis, umbonibus prommentibus. 

 Shell round heart-shaped, rather flat, with transverse parallel round- 

 ed ribs, and the beaks prominent. 



Tab. nost. 11, fig. 3, 4. 

 Venus Scotica. Montagu, Test. Brit. Suppl. p. 44. 



Linn. Trans, viii. p. 81, tab. 2, fig. 3. 

 Turton, British Fauna, p. 159. 

 Pennant, Brit. Zool. iv. p. 204. 

 Dillwyn, Descript. Catal. p. 167. 



