PLATE CVII. 



FIG. I. 

 CARDIUM ECHINATUM. 



THORNY COCKLE. 

 GENERIC CHARACTER. 



Two teeth near the beak ; and another remote one, on each side 

 of the Shell. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell somewhat heart shaped, ribs prominent with a carinated ridge 

 beset with spines along the middle. 

 Cardium Echinatum : testa subcordata sulcata : costis carinatis 



aculeatis. Linn. Gniek Sj/st. Nat. T. I. p. 6, 



p. 3247. sp. 8. 

 Pectunculus orbicularis fuscus, striis mediis muricatis. List, H. 



Conch, tab. 324. fig. 161. 

 Cardium Echinatum. Penn. Brit. Zool. No. 38. 

 Cardium orbiculare, costis circiter viginti echinatis, spinis hamatis. 



Echinatum. Da Costa Brit. Conch, p. 176 P 



Tab. 14. fig. 2. 



H 3 



