GO^GEY LI A -DITHYRA. 36. 143 



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



Dillwyn, Descript. Catal. p. 168. 



Turton, Conch. Diet. p. 233. 

 Venus foliaceo-lamellosa. Chemnitz, vi. p. 299, tab. 28. fig. 295 



to 297. 

 Mas. 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 stria3 in the inter- 

 stices 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 jilates 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 pur- 

 ple, of greater or less degree of intensity : some very richly colored. 



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

 terior side, wheJe the transverse ridges become very thin and are 

 reflected : and the impression under the beaks is more elongated, 

 and elevated in the middle into a sharp ridge 



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

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

 a correspondent impression in the left. 



The figures of Chemnitz which we have quoted, appear to corres- 

 pond with it. 



