•83 



9. 

 Cardium medium, Lin. Syft. p. 1122. — GmcL Syft. p. 3246. Medium. 

 Turt. Lin. iv, p. 200. 

 ' Chan. Conch, vi. t. 16. f. 162—3 64. 

 Lifter Conch, t. 316. I". 153. 

 Gualt. t. 83. f. B. 

 Don. Br.Shelh. i. t. 32. f. 1. 



C. with a fub-triangular, fub-cordated (liell, with about 

 thirty fix frnooth ribs, of a white colour, fpotted and va- 

 riegated with chefnut-brown : fomewhat truncated on one 

 fide, and running into an angle at the front margin ; the 

 other fide is (horter and rounded. Infide white, ufually 

 coloured with ferruginous or chefnut About the truncated 

 fide: primary teeth one in each valve, which with the la- 

 teral ones are flrong and elevated : margin crenated. 



On the authority of Mr. Donovan we have given this 

 as a BritiJJi fhell, as he informs us it has been found near 

 Hartlepool, on the coaft of Durham. The figure given 

 by that author is fcarce an inch in length : foreign fpcci- 

 mens are more than double that fize. 



Said to be found in the Mediterranean and American 

 feas. It has much the fhape of the Cardium exiguum. 



10. 

 Cardium laeve apice minuto. Walk. Min. Shells. 86 ? Rubrum. 



C. with a convex, frnooth, gloffy, pellucid, red fliell : 

 hinge not quite central ; rather broader than it is long, 

 rounded at both ends-: umbo prominent ; hinge with nearly 



M 2 obfolete 



