CARDIUM. 215 



MICROSCOPIC COCKLE. 



12. Cardium muricatulum. C. testa cordata, opaca, alba t margine mu- 



ricato. Act. Soc. Linn. 8. p. 68. 

 Shell heart-shaped, opaque, white ; margin spiny. 

 Mont. Test. Brit. p. 85. Walker Test. Minut. Rarior. f. 84. Penn. 



Brit. Zool. 1812. 4. p. 190. 



A minute microscopic species, found in the sea sand 

 of the Island of Sheppy, in Kent, where it is not uncom- 

 mon. 



BANDED COCKLE. 



13. Cardium fasciatum. C. testa suborbiculari, pellucida ; costis 27, 



[avis, complanatis. 

 Shell suborbicular, pellucid ; ribs 27, smooth, and flattened. 

 Mont. Test. Brit. Suppl. p. 30. pi. 27. f. 6. Penn. Brit. Zool. 1812. 4. 



p. 100. 



This is a small species about three eighths of an inch 

 in diameter, slightly tuberculated at the shorter side, of 

 a reddish white colour, with a few brown stripes, which 

 also appear on the inside of the shell. 



Discovered by Mr. Montagu on the Cornish and 

 Devonshire coasts. 



