CARDIUM. 259 



STREAKED COCKLE, 



47. Cardium lineatum. C. testa cordata, carinata, anterius oblique trun- 

 cata, tenui, glaberrima, nivea, aureo striata, margine denticulata. 

 Linn. Gmel. p. 3246. 



Shell heart-shaped, keeled ; the fore part obliquely truncated, thin, very 

 smooth, white, with gilt striae ; margin toothed. 



Ktimm. Lab. Rudolst. p. 210. No. 2. pi. 12. f. 4. 



This shell is introduced by Gmelin, on the authority 

 of Kammerer. 



ROSE COCKLE. 

 PI. 57. f. 6. Linnean Society's Cabinet. 



48. Cardium roseum. C. testa cordata, anterius lineis, posterius striis 

 paulo latioribus, conjunctione cordis Jiguram eemulantibus exarata ; 

 hinc convexa, Mine concava. Linn. Gmel. p. 3245. 



Shell heart-shaped, with lines on the fore part, and broader striae be- 

 hind, forming, by their conjunction, the figure of a heart; one part 

 convex, the other concave. 



Argenville Conch, pi. 23. f. D. Chem. Conch. 6. pi. 14. f. 147. Ency- 

 clop. Method, pi. 294. f. 2. a. b. 



This shell resembles the C. Cardissa ; but the margin 

 is plain, the valves are more concave, and the shell never 

 grows to so large a size. The concavity is streaked and 

 stained with rose colour, and the convex part is dotted 

 with the same on a white ground. 



Inhabits, according to Chemnitz, the coasts of the 

 Nicobar Islands, and the entrance of the Gulf of "Ben- 

 gal. It is a very rare species. In the Linnean Collection 

 it is named, by Dr. Solander, C. impressum. 



