WORMS. TESTACEA. 59. Cardium. 205 
ic 
* Edue, — Shellantiquated, with about 28 depreffed ribs, with obfole¢- 
-. recurved feales Common Cock 
Pennant Brit. Zool. iv. tab. 50, fig. 41. 
Lifter conch. tab. 533. f. 170. tab. 3345 f. 171. 
Lifter Anin, Angl. tab. 8, fig. 34. ~ 
Gualt. test. tab. 71, F. Kaorr Vergn. 6. tab. 8, f. 2, 4. 
Chemn. conch. 6. Vign. 4, C. tab. 19. f. 194. 
Found on all fandy coaíts, in great abundance, lodged a little 
beneath the fand ; their place is pointed out by a round depref- 
fed fpot: /bell generally white, with fometimes a blueifh or 
yellowifh caft; the ribs a little rough near the circumfererce. 
_ The fifh affords a wholefome and nourifhing focd. 
Ufandicum. Shell grooved, with about 36 triangular fmooth ribs. 
Chemn. conch. 6. tab. 19, figs 195. 
Iphabits Zce/and and Greenland íeas; refembles the laít, but the 
grooves are deeper and more numerous, and there is no tranf{- 
verfe itriz except the outer margin: blackith,fometimes banded. 
Grenlane Shell antiquated, glabrous, thin, moufe-colour, with angu- 
dicum. —. lar ferruginous lines; the margin fmootb, with obfo- 
lete longitudinal {triz. 
Chemn. conch. 6. tab. 19, fig. 198. 
Inhabits Greenland and Iceland: 2% inches long, 3% broad: 
fometimes marked with brownifh bands: probably a variety 
of C, edule, | 
Rufticum, Shell antiquated, with 20 remote grooves, the intermediate 
fpaces rugged. 
Barbut's Shells, tab. 3. fig. 12. 
Regenf. conch. 1. tab. 12, fig. 77, 78. 
Chemn. conch. 6. tab. 19, fig. 197. 
Inhabits Eurepeam íeas, principally the Mediterranean: refembles 
C. edule, but the fhells have an evident ridge on the forc- 
margin when clofed, a narrow depreflure behind the beaks, 
the grooves deeper, and the ribs fewer and more convex: 
colour fometimes ferruginous with livid bands; fometimes 
white, the anterior part brown, within blueifh; fometimes 
white with ferruginous yellowifh or blucifh bands. 
Glaucun, Shell fubantiquated, the forepart glaucous, the hind-part 
with 20 grooves imbricate upwards: beaks violet. 
Poiret Voyage :n Bard, 2. p. 13. 
Inhabits Barbary: 10 lines high, 12 broad, 8 deep. 
Pectinatum. Shell lightly heart-(haped and pe&inate. 
Mutr, fund, te. tab. 2, fig. 18, 
Inhabirg 
