65 
TAB. XXXII. 
CARDIUM spinosum. 
Class 6. Vermes. Order 3. Testacea. 
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. 
This 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 echmatum or 
C. aculeatum. 
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. aculeatum as to the general contour; 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 
