194 PALEONTOLOGY OF NEW JEESEY. 



are the features preserved that it has been difficult to obtain a figure. The 

 groove formed by the advance of the tooth along the volution, as the shell 

 increased in size, is preserved on the cast, but it is not possible to determine 

 w^hether the shell was umbilicated or had a solid axis, so there is some 

 slight uncertainty as to the specific identification. The best cast is imbed- 

 ded in the rock so firmly that it can not be cleared to get the dorsal side, 

 and the filling of the aperture forms so much of the exposed portion that 

 the figure gives little more than an outline of the aperture and a small por- 

 tion of the preceding volution. 



Formation and locality : In the upper layers of the Upper Green Marls 

 at Shark River, New Jersey. Collection at Rutgers College. 



FUSID^. 



Genus FUSUS Lamarck. 



FUSUS ANGULARIS, n. Sp. 



Plate XXIV, Figs. 15-19. 



Shell of medium size or smaller, only moderately slender, with four or 

 five volutions in the cast, the last one proportionally larger than the others; 

 volutions angular, rather elongated, the angulation being at the upper third 

 of the exposed length on those above the body vhorl, and the space above 

 the angle flattened or slightly concave; suture lines strong, and in the cast 

 bordered above by a narrow raised band, probably caused by the thickness 

 of the shell above on the inside of the whorl, and consequently not a feature 

 of the shell itself; aperture large, angular near the upper third and pro- 

 longed below into a gradually narrowing canal; not suddenly constricted; 

 beak moderately long and bent; volutions crossed by numerous oblique, 

 rather sharply elevated costse, which are confined to the upper portion, those 

 on the body whorl being irregular and inclined to form fasciculse of less 

 elevation than those on the others ; surface of the shell marked by raised 

 spiral lines, those above the angle of the whorls being even and fine, and 

 those below that point coarser, more widely separated, and on the beak 

 showing a tendency to alternation in size. 



This shell presents somewhat the features of a Fasciolaria, but the col- 

 umella, which is well shown by its impression, presents no evidence what- 



