CARDIUM. 229 



PECTINATED COCKLE. 



29. Cardium pectinatum. C. testa subcordata, pectinata. Linn. Syst. 



Nat. ed. 12. p. 1124. Linn. Gmel. p. 3253. 

 Shell somewhat heart-shaped, and pectinated. 

 Gualt. Test. pi. 75. f. A. Murr. Fund. Testae, pi. 2. f. 18. 



A white shell, with distant striae, rough upwards ; the 

 cavity under the beaks yellow ; margins prominent. 

 Inhabits the Mediterranean. 



EARED COCKLE. 



30. Cardium Auricula. C. testa cordata, subrhombea, costis utrinque 

 viginti quatuor ; sulcis subtilissime crenulatis, natibus distantibus. 

 Linn. Gmel. p. 3253. Forsk. Faun. Arab. p. 122. No. 52. 



Shell heart-shaped, somewhat rhombic, with twenty-four ribs on each 

 side ; the grooves very finely crenated ; beaks distinct. 



Rugenf. Conch. 2. (ined.) pi. 9. 



A white pellucid shell, with a toothed margin. 

 Length two inches and a quarter ; breadth one inch and 

 three quarters. 



Inhabits the shores of Arabia and Egypt. 



