222 COyCBYLlA—VlTHTRJ. 49. 



Tab. nost. 20, fig. 1. 

 Piuna ingens. Pennant, Brit. Zool, iv. p. 244. 



Montagu, p. 180, .58.3, and Suppl. p. 72. 



Linn. Trans, viii. p. 112 



Ttirton, British Fauna, p. 165. 



Dillwyn, Descript. Catal. p. 325. 



Turton, Concb. Diet. p. 148. 

 Pinna laeris. Donovan. British Shells, v. tab. 152. 



3Jus. nost. From the Devonshire coast. 



Shell growing to a foot or more in length, and half as much 

 in breadth, horn color and semitransparent, rather flattened at 

 the broader extremity, from which it runs down on the open side 

 in a nearly straight line for about half its length, and then slopes 

 suddenly towards the pointed end ; the surface is marked with 

 about eleven obscure longitudinal ribs which extend over three- 

 fourth from the anterior margin. 



frajriiis. Pi.N.vA testa otafd, siriis transcersis arcuatis, apice rotundato, 

 latere postico producfo rotundato. 

 Shell oval, with transverse arched striae, rounded at top, produced 

 and rounded at the hinder side. 



Tab. nost. 20, fig. 2. 

 Pinna pectinata. Pennant, British Zool. iv. tab. 72. 

 .Mus. nost. From the Devonshire coast. 



.Shell about six or seven inches long, and is marked like the 

 jast, but is of a darker horn-color, and more flattened : it difl'ers 

 also much in the outline, being broader in proportion to its 



