92 PALEONTOLOGY OF NEW JERt^EY. 



I have not been enabled to .see, as it is attached to nuirl which it iiiiglit not 

 be safe to remove. 



Localitif: Tlie si)eciinen, whicli is the ty})e of the species, is from the 

 greenisli-<^ra\' marls at Shiloh, N. J., and belongs in the cabinet of the 

 Academy of Natural Sciences at Philadelphia. 



Saxicava paralis. 



Plate XVI, fig. 6. 



Saa-icava parnlis Conrad: Am. Jour. Coiu'U., vol. 2, p. 70, PI. iv, fig. 6; Heilprln, Mio- 

 cene Moll. New Jersey, Pioc. Acad. Nat. Sci. Phil., ISST, jip. 397 and 4011. 

 iiaxicara (f) par((Ks Heilprin: Teit. Geol. V. S., j). S. 



"Sub-oval, ventricose, equilateral, very thin in substance, end margins 

 nearly equally rounded, summit j)rominent, lines of growth minute." (Con- 

 rad, loc. cit.) 



Only a single very imperfect right valve of this sjjecies is known, that 

 from which the above description and the figure in the American Journal 

 of Conchology was taken. The l)eak is absent, and a largy. 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 neai'er to 

 the anterior than to the posterior extremity of the valve. Cardinal margins 

 very slightly arcuate and sloping toward the extremities, whicli are nearly 

 equally rounded, the longest part of each being a little beh^w the middle 

 of the height of the valve. Disc of the shell somewhat highly ventricose, 

 the anterior umbonal sloj)e the most abruj)t. Basal line broadly arched. 

 Surface marked by compai'ativel}' strong concentric lines of growth. The 

 interior of the valve is unkown, but just the central part of the hinge is 

 ex})osed, showing the features of Saxicava as far as they can be traced. It 

 is, however, very obscure on this part. The general exjiression of the shell 

 is that of a large Sphsierium, bvit what is seen of the hinge contradicts this 

 expression. 



LocaUty: 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. 



