510 



We found a perfetl fhell of this curious fpecies, in a 

 heap of fand, that was brought from Salcomb bav ; and 

 a fingle valve, larger than the above defcribed. 



CHAMA. 



Chama cor. Don. Br. Shells. \v. t. 134. Cor. 



p. 134. 



PECTEN, 



Oftrea lineata. Don. Br. Shells, iv. t. 116. Lixeatus. 



p. 14' 



: / , 



There are feveral beautiful, and fingular varietier, of L/evis. 

 this fpecies; fomeare dull yellow, others purplifh-brown p. 150. 

 or chefnut, with one or both valves mottled, and fom^e- 

 times ftreaked with white, or yellowifh ; and though ap- 

 parently fmooth, when examined by a lens, are found 

 to be very finely (hagreened. One fpecimen in our cabi- 

 net, has the margin, for the breadth of one tenth of an 

 inch, very confpicuoufly ribbed or rayed, the reft of the 

 fliell more ftrongly fliagreened than ufual ; the rayed 

 part divided from the other, by a very regular concen- 

 tric line ; the rays about fifty in number : the infide 

 edge fiaely crenated. 



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