10 PROCEEDINGS OF THE ACADEMY OF [Jan.. 



more dense and cuts smooth, while that from Snow Hill is more sandy 

 and crumbles easily. 



Pectunoulus hamula Morton, Syn. Org. Rem., 64, pi. 15, f. 7, 1834. 



Pectunculus australis Morton, Syn. Org. Rem., 64, 18B4 = P. svbmtstralis d'Orb., Frod. de Pal., 

 p. 243. 



Pectunculus rotundatus Gabb. 



Axinoea rotundata Gabb, Jour. Acad. Nat. Sci., IV, 2 ser., 396, pi. 68, f. 33, 

 ]S60. 



PINNIDiE. 



Pinna rostriformis Morton. Proc. Acad. Nat. Sci., I, 132, 1841; Jour. Acad. Nat. Sci., VIII. 



1 ser., 214, pi. 10, f. 5, 1842. 



Pinna laqueata Conrad. 



Specimen figured by Whitfield (pi. 16, f. 1). 



MELINID^. 

 Gervilliopsis ensiformis (Conrad). 

 Specimen figured by Whitfield (pi. 15, f. 11). 



Inoceramus barabini Morton, Syn. Org. Rem., 62, pi. Ill, f. 11, pi. XVII, f. 3, 1834. 



Inoceramus alveatus Morton. Syn. Org. Rem., 63, pi. XVII, f. 4, 1831. 



Inoceramus perovalis Conrad, Proc. Acad. Nat. Sci., VI, 200, lSi2; Jour. Acad. Nat. Sci., II, 



2 ser., 299, pi. 27, f. 7, 1854. 



Inoceramus sagensis Owen, var. quadrans Whitf., Mon. U. S. Geol. Sur., IX, 79, pi. 14, f. 

 16, 1885. 



HAPLOSCAPHID^ Conrad. 



Haploscapha capax Conrad, Ann. Rep. U. S. Geol. and Geogr. Sur. Ter. (Hayden), 456, 1873 

 (1874). 



Haploscapba grandis Conrad, U. S. Geol. Sur. Ter. (Hayden), II, 23, pi. 56, 1875. 



Haploscapha (CuouUifera) eccentrica Conrad, U. S. Geol. Sur. Ter. (Uayden), II, 24, pi. 57, 

 1875. 



PTBRIID^. 



Pteria laripes (Morton). 



Aricula laripes Mort., S}'!!. Org. Rem., 63, pi. XVII, f. 5, 1S34. 



Pteria navioula WLitfleld, Mon. U. S. Geol. Sur., IX, 70, pi. XIV, f. 8, 1SS5. 



Meleagrinella abrupta (Conrad). 



Aricula abrupta Conr., Jour. Acad. Nat. Sci., II, 2 ser., 274, pi. 24, figs. 5, 6, 

 1853. 



OSTREID^. 



Ostrea cretacea Morton, Syn. Org. Rem., 52, pi. XIX, p. 3, 1834. 

 Ostrea plumosa Morton, Syn. Org. Rem., 51, pi. Ill, f. 9, 1S34. 



Specimen figured by Whitfield (pi. Ill, f. 13), also the specimen 

 figured on pi. IV, f. 9, as Anomia argcntaria. 



Ostrea denticulifera Conrad, Jour. Acad. Nat. Sci., Ill, 2 ser., 30, pi. 35. figs. 1, 8, 1858. 

 Ostrea littlei Gabb, Proc. Acad. Nat. Sci., 1876, 321. 

 Ostrea tecticosta Gabb, Jour. Acad. Nat. Sci., IV, 2 ser., 40.3, pi. GS, figs 47, 48, 1860. 



The New Jersey type is figured by Whitfield (pi. Ill, figs. 1, 2). 



