PLATE CVIL 



FIG. I. 

 CARDIUM ECHINATUM. 



THORNr 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 carlnated ridge 

 beset with spines along the middle. 

 Cardium Echinatum : testa subcordata sulcata : costis carinatis 



aculeatis. Lm7i. Gmel. Sj/st. Nat. T. I. p. 6. 



p. 3247. sp. 8. 

 Peclunculus orbicularis fuscus, striis medils muricatis. List. II, 



Conch, tab. ^24!. Jig. \6\. 

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

 Cardium orbiculare, costis clrciter viginti echinatis, spinis hamatis. 



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



Tab. U.fg. 2. 



H 3 



