CARDIUM. COCKLE. 
31 
• 5. Cardium laevigatum. Smooth Cockle. 
Lister, p 1. 332. f. 169— Pennant, pi. 54, lower fig. — Da 
Costa, pi. 13. f. 6 — Dorset Cat. pi. 7« f. 6 — Donovan , pi. 54—< 
/PM pi- 54. f. 1 , 2 . 
Shell somewhat oval, much produced at one end, with 
very numerous faint flat ribs, between which it is obscurely 
striate longitudinally, and crossed by distant obscure 
raised transverse lines, quite smooth at the anterior side, 
covered with a yellowish-brown skin almost concealing the 
markings, under which it is of a pale flesh-color $ the 
younger ones finely polished and marbled with whitish and 
pink or dull red \ inside .smooth, glossy, with more or less 
of a pink hue, the margin strongly toothed: length two 
inches and a half; breadth two inches. 
Sandy shores of England and Ireland, v. v . 
6 . Cardium elongatum. Lengthened Cockle . 
Montagu, p. 82. 
Shell flattish, somewhat oval, a little angular and elon¬ 
gated on one side, with twenty-one faintly wrinkled and 
rounded ribs: color yellowish-white or pale rufous, with 
sometimes red blotches on the elongated side which are 
visible within; inside yellowish-white 5 beaks not quite 
central: diameter a quarter of an inch. 
In Salcomb bay, Devon: rare. v. m. 
a /. Cardium exiguum. Pigmy Cockle. 
Dorset Cat. ’pi. 2. f. 11. 
Cardium pygraaeum. Donovan , pi. 32. f. 3. 
Shell coarse, sometimes rather flattened and sometimes 
very-convex, somewhat heart-shaped and produced at one 
end, with about twenty ribs, which are tubercled towards 
the shorter end and wrinkled towards the margin the 
cider ones wrinkled all over •, strongly striate transversely 
in the interstices: color dirty white or brown, often co¬ 
vered with a dark skin : under the beaks a strong heart- 
shaped impression: inside smooth, white, often rufous at 
the angular side: length about half an inch - 3 breadth nearly 
as much. 
Western coasts, and DublinbayandCove in Ireland, v.v. 
8 . Ca 
