65 



TAB. XXXII. 

 CARDIUM spinosum. 



C/aw 6. Vermes. Order 3 . Testzcea. 



Gen. Char. Animal a Tethys. Shell bivalve, nearly 

 equilateral, equivalve, generally convex, longitudi- 

 nally ribbed, striated or grooved, with a toothed 

 margin : hinge with 2 teeth near the beak and a 

 large remote lateral one on each side, each lock- 

 ing into the opposite. — Turt. 



Spec. Char. Tender, obliquely sub-cordate, one 

 side truncate, with 20 prominent ridges, armed 

 with long, sharp, flat spines. 



1 HIS very neat, elegant, and curious Cockle seems, by 

 some mistake, to have escaped the vigilance of most authors, 

 as it does not agree with either the Cardium echinatum or 

 C. aculeatiim. 



Our shell is not often found, but among many shells and 

 fragments from Torbay on the Devonshire coast, I met 

 with only one perfect valve*. It nearest resembles the 

 C. aculeahim as to the general contour j but is always a 

 more delicate and tender shell; the truncation is more 

 abrupt, and forms a right angle with the line of the hinge. 



* Mr. Humphrey supplied me with the specimen figured from the same 

 coast. Col. Montague informs me that he has found them on the Devon- 

 shire coast. 



VOL. I. H 



