194 PALEONTOLOGY OF NEW JERSEY. 
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 
whether 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. 
FusUsS 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 costze, which are confined to the upper portion, those 
on the body whorl being irregular and inclined to form fasciculze 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-_ 
