“I 
concave tooth and small denticle behind it ; no late- 
ral teeth: ligament internal. 
S. Binewami. Turt. B. p. 36. t. 3.7.4,5. §& t. 19. 
J. 3.—F. p. 465.—W edge-shaped, covered with a brown 
wrinkled skin which extends beyond the anterior end, 
truncate at the hinge, with the upper margin often a 
little contracted about the middle, gradually taperitrg to 
the open anterior extremity ; beaks rather prominent, 
with the points not quite opposite but diverging from 
each other ; inside glossy white with a purplish tint, the 
margin short and plain, the concave tooth oblique and 
inflected. +4....3. Torbay, in rocks. 
_§. Swarnsont. Turt. B. p. 37. t. 3. £. 3. and t. 19. 
f.2.—F. p. 466.—Oval, wedge-shaped, rounded ante- 
riorly ; the concave tooth projecting horizontall y 
inwards. }4.,.3. Torbay, in rocks. 
Genus.—PANDORA 
Regular, inequivalve, inequilateral, and transversely 
oblong ; upper valve flattened, under convex ; hinge 
with two oblong diverging cardinal teeth in the 
upper valve; the other valve with two corres- 
ponding grooves : ligament external. . 
P. Ostusa. Lam. 2.—Sow. Sp. Con. f. 1, 2, 
»Sonen. Pinna. Mont. t... 15. f. 3, —Qvate, a. 
terior side very short, Age and obliquely rounded at 
