44 PALEONTOLOGY OF NEW JEESEY. 



I have seen only one of the deeper valves of this species, and that 

 has the apex broken. The features of the smaller valve are given from 

 Mr. Conrad's figure. I cannot see how the shell differs from the ordinary 

 Afiomia, and do not think there is ihe slightest need of the generic division. 



Formation and locality, — In the Lower Green Marls at Upper Freehold, 

 Monmouth County, N. J. Collected by Dr. Bruere. 



Genus PAEANOMIA Coiirad. 1860. 

 (Jour. Acad. Nat. Sci., Phil., Yol. lY, pp. 290, and Am. Jour. Conch., Yol. Ill, p. 8.) 



Paranomia scabra. 

 Plate X, Fig. 10. 



Placuna scabra Morton. Synopsis, p. 62. 

 Placunanomya scabra (Mort.) Gabb. Synop., p. 167. 

 Placunomia scabra (Mort.). Meek, Check-list, p. 6. 



Paranomia scabra (Mort.). Conrad, Am. Jour. Conch., Yol. Ill, p. 8. Meek, Geol. Surv, 

 K J., 1868, p. 724. 



The type specimen of this species as marked in the collection of the 

 A. N. S., Phil., is a small fragment, scarcely sufficient for generic identifica- 

 tion, and when originally described was not figured. The fragment is 

 probably of a lower valve, being very irregular, and is about seven-eighths 

 of an inch in width by about one inch and an eighth long. The surface 

 is marked by irregular radiating costse, which are rather fine, and covered 

 toward the front of the shell by short spines. There are also strongly- 

 marked concentric lines crossing the shell, which add greatly to the rough- 

 ness and scaly surface characters produced by the short irregular spines. 

 No portion of the hinge is preserved. Shell thin and fragile. 



The specimen might very well be part of the valve of a Spondylus so 

 far as its surface characters are preserved, but the shell does not break into 

 longitudinal sections, as do those of that genus when similarly preserved, 

 but seems to divide into concentric laminae, as would an Oyster. 



Formation and locality. — Dr. Morton gives no locality for his specimens, 

 but mentions only that they are from the blue marls. In the collection of 

 the Acad. Nat Sci. it is labeled ^^N. J. Cret." 



