50 PALEONTOLOGY OF NEW JERSEY. 



being marked with narrow, distant, impressed lines, while on this one the 

 ribs are prominent and rounded, with sharp narrow sulci between. The 

 feature, mentioned by Mr. Conrad, of the ribs suddenly becoming obsolete 

 toward the posterior margin, is only partially correct, as but few of the 

 specimens show it distinctly enough to be a pronounced feature. 



Locality: Mr. Conrad gives near Mullica Hill, N. J., as the only locality, 

 and I have seen no specimens which I could identify with it from any other 

 place. Those used are all from the cabinet of the Academy of Natural 

 Sciences, Philadelphia, and are presumed to be the originals of Conrad's 

 description. 



Genus CAKDITA Brug. 



Cardita granulata. 



Plate ix, figs. 1-4. 



Cardita granulata Say; Jour. Acad. Nat. Sci. Phil., 1st ser., vol. 4, p. 142, PL xn, 

 fig. 1; Oourad Miocene Foss., p. 12, PI. vn, fig. 1; Heilprin, Proc. Aead. Nat. 

 Sci. Phil., 1887, p. 403. 



Cardita (Actiyiobolus) granulata (Say) Conrad; Proc. Acad. Nat. Sci. Phil., 1862, p. 

 578. 



Cardita tridentata Emmons?; N. Oar. Geol. Surv., 1858, p. 302, Fig. 236a. 



Venerieardia (Cardiocardites) granulata (Say); Meek, Check List Miocene Foss., p. 7 



" Suborbicular, with about twenty-five convex ribs, and wrinkled 

 across; inner margin crenate. 



"Beaks nearly central, a little prominent, curved backward; ribs gran- 

 ulated on the umbones, and transversely wrinkled near the base, convex; 

 apices somewhat prominent beyond the general curve of the shell; inner 

 margin and edge crenate ; cardinal teeth two. 



" Length from the apex to the base four-fifths of an inch, breadth 

 nearly the same. 



" Rather proportionally longer than the decussate and more oblique." 

 (Say in Jour. Acad. Nat. Sci.) 



The specimens obtained from New Jersey are all below the adult size, 

 the largest having a height of less than five-eighths of an inch. They are 

 all single valve and nearly all show evidences of much trituration on the 

 beach before imbedding, some to the extent of having the deep crenulations 



