Al 
CARDIUM. 
Gen. Cuar. Shell an equivalved bivalve, subcor- 
date ; valves dentated on their inner margins ; 
hinge with central and lateral teeth, the two 
central ones oblique, approximating ; those in 
each valve crucially receiving each other by 
mutual insertion ; lateral ones remote and in- 
serted. 
CARDIUM Hillanum. 
TAB. XIV.—Upper figure. 
Srec. Cuar. Shell nearly circular, a little oblique, 
covered with numerous concentric strie, an- 
terior part straightish at the edge, longitudin- 
ally furrowed. 
—see 
Tus species is rather wider than long, it is a little gibbous ; 
the rising spaces between the striw are smooth, giving a 
peculiar neatness to the shell: the longitudinal furrows 
occupy about one fourth of its breadth. 
A remarkably elegant species, with fine specimens, of 
which I have been favoured by Miss E. Hill, of Tawstock, 
a Lady well known for her great attention to Fuci, &c. who 
desirous of seeing every thing figured from as good speci- 
mens as possible, presented me with her very best. Find- 
ing Mr. Parkinson at a loss for a name, and that the shell 
was sufficiently distinct from Cardium discors of Lamarck, 
T call it Hillanum thinking Miss Hill’s attention and assiduity 
highly deseryes to be remembered. The shells are siliceous, 
and are from the remarkable micaceous Sandstone stratum 
at Blackdown, near Cullumpton, Devonshire, a place rich 
in such curious productions, as will occasionally be shewn. 
