149 
CARDIUM angustatum. 
TAB. CCLXXXITTT.— Fig. 2. 
Spec. Cuar. ‘Transversely elongated, thin, rather 
depressed ; coste 27; margin toothed; an- 
terior side truncate, posterior rounded. 
Iw the front of this Cardium there is commonly a slight 
depression or sinus, from which the anterior side is rather 
produced; the coste are rounded, and roughened by 
transverse striz, in decay they appear to be hollow. The 
length equals about two-thirds the width. 
By no means an uncommon shell in the Suffolk and 
Norfolk Crag, yet not formerly noticed: I have received 
it from Alderton near Woodbridge, by favour of the 
Rev. G. R. Leathes and Prof. Sedgewick: I have also 
found it at Bramerton near Norwich. 
CARDIUM edulina. 
TAB. CCLXXXIII.— Fig. 3. 
Srec. Cuar. Nearly orbicular, convex, slightly 
oblique, thick; coste 18, rugose; anterior 
side slightly truncated. 
Dyererrenr from the C. edule, for which it is sometimes 
taken, in the form of the anterior side, which is not 
