96 



PECTEN cinctus. 



TAB. CCCLXXl. 



Spec Char. Orbicular, gibbose, longitudinally 

 striated, imbricated ; edges of the laminae, 

 thin, erect ; ears small ; edge entire. 



Remarkable for concentric, erect laminae, that are very 

 nnmerous, especially towards the edge ; but from their 

 being thin, they are commonly worn off. The ears are 

 strongly marked with close ridges : the valves are thick, 

 especially towards the hinge, and of nearly equal convex- 

 ity. The striffi are sunk and rather irregular. 



Dawson Turner, Esq. of Yarmouth, celebrated for his 

 botanical knowledge, was the first Friend who sent me 

 this interesting shell. It was found in the alluvial clay 

 of Suffolk. The specimen figared was sent me from the 

 neighbourhood of Horncastle by Mr. Wier, both are 

 remarkable for having grains of iron ore, arranged in 

 one, two, or three regular rows between the concentric 

 laminae, according to the distance of those lamin©, the 

 grains being uniform in size. It is probable that they 

 both belong to the inferior or [ronshot Oolite, although 

 the first is filled with indurated marl. 



