173 
ASTARTE plana. 
TAB. CLXXIX.—Fig. 2. 
Spec. Cuar. Nearly orbicular, depressed; sur- 
face plain; lunette elongated, acute, deep ; 
margin entire. 
ee 
Very analagous in general form to A.Scotica ; and when 
the softer parts between the lamina have been corroded, the 
surface presents numerous concentric ridges ; otherwise, 
itis only marked with fine lines of growth. The shell is 
thick, equilateral, with a pointed beak, and entire mar- 
gin; its length does not always bear the same proportion 
to the width, sometimes being equal to it, but oftener less. 
Occurs in a sandy alluvial stratum, at Bramerton, near 
Norwich, where I collected specimens in August, 1817. 
‘ASTARTE obliquata. 
TAB. CLXXIX.—Fig. 3. 
Spec. Cuan, Obovate, transverse depressed ; with 
many eblique concentric striz upon the sur- 
face ; margin crenulated. 
a 
- "Tae numerous regular impressed strie which cross the 
few lines, or rather waves of growth at a very acute 
angle, give rise to the name of this elegant shell; its 
width is greater than its length ; it is somewhat depressed 
and slenderer than most of the Genus : the spaces between 
the strie are rounded and smooth. 
My active correspondent, Mrs. Cobbold, discovered 
this shell in the Crag pits at Holywells, near Ipswich, 
and indulged me with specimens in 1812: they are in a 
good state of preservation. 
