198 PALEONTOLOGY OF NEW JEESEY. 



side of the whorl, consisting of large ones with several smaller ones between. 

 On the upper surface they appear to be more even. 



The cast presents every indication of being of the same species as the 

 shells from Claiborne, Alabama, except that it is smaller in size. I see no 

 reason, therefore, for separating it under a distinct name. 



Formation and locality: In the upper layer of the Upper Green Marls, 

 at Shark River, New Jersey. In the collection at Rutgers College. 



Fusus (Neptunea ?) eocenicus, n. sp. 

 Plate XXV, Figs. 10-13. 



Shell of medium size, depressed-biturbinate in form, exclusive of the 

 anterior beak; spire depressed-conical, probably somewhat changed in the 

 casts by compression; apical angle about 90° or even more; volutions four 

 in number, rapidly increasing in size, and sharply carinate on the periphery ; 

 flattened or slightly convex on the upper surface and rather strongly convex 

 below ; coiled so as to leave the inner ones exposed for only a little distance 

 below the carination; aperture large, transverse, angular in the middle and 

 extended below in a narrow canal; anterior beak ra,ther slender, its length 

 unknown, but being at least as long as the height of the shell above; volu- 

 tions marked on the periphery by a series of slight angular, transverse 

 nodes, which do not appear below the angulation of the volution and are 

 but slightly seen above, being confined principally to the periphery. Sur- 

 face of the shell marked by fine spiral striae, those below the angle of the 

 whorls being obscurely alternate in size, as seen on the casts. 



This species, as represented in the collection, does not appear to have 

 reached a very large size, the largest cast scarcely exceeding an inch and a 

 half in its greatest diameter, and the height, exclusive of the beak, has not 

 been much greater. The nodes on the periphery are proportionally more 

 distinct on the smaller volutions, and much more closely arranged than are 

 those on the principal ones. None of the specimens preserve the beak to 

 its full extent; the species somewhat resemble Fusus stamineus Conrad, from 

 the Claiborne sands, but the spire has been somewhat more elevated and 

 the volution below the carina rounder and shorter, and the nodes smaller 

 but more numerous, while the striae are very much finer. 



