92 PALEONTOLOGY OF NEW JERSEY. 
I have not been enabled to see, as it is attached to marl which it might not 
be safe to remove. 
Locality: The specimen, which is the type of the species, is from the 
greenish-gray marls at Shiloh, N. J., and belongs in the cabinet of the 
Academy of Natural Sciences at Philadelphia. 
SAXICAVA PARALIS. 
Plate xv1, fig. 6. 
Savicava paralis Conrad: Am. Jour. Conch., vol. 2, p. 70, Pl. rv, fig. 6; Heilprin, Mio- 
cene Moll. New Jersey, Proc. Acad. Nat. Sci. Phil., 1887, pp. 397 and 403. 
Savicava (?) paralis Heilprin: Tert. Geol. U.S., p. 8. 
“Sub-oval, ventricose, equilateral, very thin in substance, end margins 
nearly equally rounded, summit prominent, lines of growth minute.” (Con- 
rad, loc. cit.) 
Only a single very imperfect right valve of this species is known, that 
from which the above description and the figure in the American Journal 
of Conchology was taken. The beak is absent, and a large part of the 
posterior cardinal portion of the shell. The form of the shell is trans- 
versely triangularly-ovate in outline, and nearly equilateral, the beak, 
which has been prominent and almost inflated, being a very little nearer to 
the anterior than to the posterior extremity of the valve. Cardinal margins 
very slightly arcuate and slopmg toward the extremities, which are nearly 
equally rounded, the longest part of each being a little below the middle 
of the height of the valve. Dise of the shell somewhat highly ventricose, 
the anterior umbonal slope the most abrupt. Basal line broadly arched. 
Surface marked by comparatively strong concentric lines of growth. The 
interior of the valve is unkown, but just the central part of the hinge is 
exposed, showing the features of Saxicava as far as they can be traced. It 
is, however, very obscure on this part. The general expression of the shell 
is that of a large Spheerium, but what is seen of the hinge contradicts this 
expression. 
Locality: From the greenish-gray marls of the Miocene at Shiloh, N. J. 
The specimen is from the collection of the Academy of Natural Sciences at 
Philadelphia. 
