CONCHYLIA— l>lTif rie^. 36. 143 



Pennant, Brit. Zool. iv. p. 208. 



Dillwyn, Descript. Catal. p. 168. 



Tiirton, Conch. Diet. p. 233. 

 Venus foliaceo-lamellosa. Chemnitz, vi. p. 299, tab. 28, fig. 29-5 



to 297. 

 Mus. nost. Scotland. South of Devon, and Bantry bay. 



A fine series of this very beautiful species is now before us, 

 from a quarter of an inch to two inches and a half in diameter. 

 In some there are very faint traces of longitudinal striae in the 

 interstices of the plates, and upon the plates themselves ; others 

 have no appearance of them ; and in the larger specimens we 

 perceive, that the laminae or plates themselves are exquisitely 

 decussated when examined by a good glass. 



The color is of a brownish-white, and most of our Devonshire 

 specimens have two or three broken longitudinal rays of red or 

 purple, of greater or less degree of intensity ; some very richly 

 colored. 



It is a flatter shell than the Venus Casina, angulated on 

 the anterior side, where the transverse ridges become very 

 thin and are reflected : and the impression under the bealcs 

 is more elongated, and elevated in the middle into a sharp 

 ridge. 



Like many of the massy species, there is a small tubercle on 

 the posterior side of the teeth under the areola, in the right 

 valve, with a correspondent im])ression in the left. 



The figures of Chemnitz which we have quoted, appear to 

 correspond with it. 



