230 CARDIUM, 



ASIATIC COCKLE. 



31. Cardium Lima. C. testce gibbce, costis aculeatis, anterioribus tuber- 



culis membranaceis recurvatis ad latera crenatis, sulcis intermediis 



granulatis. Linn. Gmel. p. 3253. 

 Shells gibbous ; ribs prickly, those before with recurved membranaceous 



tubercles ; intermediate grooves granulated. 

 Cardium Asiaticum. C. testa cordata, costis obsoletis, longitudinalibus, 



punctis serialibus subspinosis, antice lamellosis. Brug. Encyc. Meth. 



Hist. Nat. 6. p. 224. 

 Chem. Conch. 6. pi. 15. f. 153, 154. 



A thin, yellowish-white shell, with from thirty to 

 forty delicate ribs ; the apex and interior of the dentated 

 edges are reddish; it is grooved inside. Length two 

 inches ; in the breadth rather less. 



Inhabits the Indian ocean, and is a very rare shell. 



PAPER COCKLE. 



PI. 55. /. 5. Mrs. Mawe. 



32. Cardium papyraceum. C. testa pellucida, cinerea t striis longitudi- 



nalibus tenuibus. Linn. Gmel. p. 3254. 

 Shell pellucid, and ash-coloured, with thin longitudinal stria?. 

 Chem. Conch. 6. pi. 18. f. 184. Encyclop. Method, pi. 293. f. 2. 



A very thin, brittle shell, of a whitish, or ash colour, 

 finely and closely ribbed longitudinally ; the margins of 

 the valves are finely toothed ; the summits are some- 

 times marked with purple, and the inside spotted with 

 the same; the hinge is like the other species of the 

 genus. Length an inch and three quarters; breadth 

 nearly the same. 



Inhabits the Indian ocean, and is found on the shores 

 of New Holland. 



