234 CARDIUM. 



white, with longitudinal grooves. Length an inch; 

 breadth the same. 



Country unknown. 



First described by Baron Born. 



DONAX COCKLE. 



37. Cardium donaciforme. C. testa subcordata, longitudinaliter sulcata, 



antice truncata, natibus cancellatis. JBrug. Encyc. Meth. Hist. Nat. 6. 



p. 214. 

 Shell somewhat heart-shaped, longitudinally grooved, truncated before; 



beaks channelled. 

 Chem. Conch. 6. pi. 16. f. 165. Encyclop. Method, pi. 296. f. 2. Schrot. 



Einl. in Conch. 3. pi. 7. f. 14. 



This species has the form of a Donax ; it is broader 

 than long, flat before, and nearly of a triangular shape ; 

 the longitudinal ribs are flat, and separated by shallow 

 grooves, like striae ; the anterior end is heart-shaped; it 

 is of a dull white colour, tending to yellow, and marked 

 with brown spots, and streaks ; the lateral teeth in one 

 valve are sharp-pointed, in the other obtuse. 



Inhabits the Indian ocean. 



FURBELOWED COCKLE. 



PL 56./. 4, 5. Mr. Jennings. 



38. Cardium fimbriatum. C. testa subcordata, costis utrinque viginti 



quatuor, margine jimbriato. 

 Shell somewhat heart-shaped; ribs on both valves, twenty-four; margin 



fringed. 



This new and singular species is about the size of 

 the common cockle, with regular longitudinal ribs, ter- 



