224 PALEONTOLOGY OF NEW JERSEY. 
Formation and locality: In the upper layers of the Upper Green Marls 
at Shark River, and at Farmingdale, New Jersey. From the collection of 
Dr. Kneiskern, now at Rutgers College, and from that of Dr. Lawrence 
Johnson, of New York City. 
CASSIDID.Z. 
Genus CASSIDARIA. 
CASSIDARIA CARINATA Lam. ? 
Plate XxxIv, Figs. 18-22. 
Cassidaria carinata Lam.: Hist., vol. 7, p. 217, of Deshayes and various authors. 
Shell below a medium size, subglobose in general outline, but higher 
than broad; whorls from four to five in number, the principal one large and 
bordered by a broad reflected lip; spire moderately elevated, the volutions 
distinctly but not largely exsert, but sharply carinated; body volution 
marked by from three to five spiral carinations, three of which are dorsal 
and strong, the other two being on the lower slope of the volution and not 
always distinct; carinations nodose, the superior one having fewer and 
stronger nodes than the next two, while on the two inferior carinas the 
nodes are seldom shown. The volutions of the spire are also nodose on the 
carination, the nodes being small and very numerous; aperture large, the 
outer lip reflected, forming a wide, flange-like border; base of the shell 
extended into a rather long, recurved, twisted beak and canal; surface of 
the shell marked by fine spiral raised lines. 
This shell is exceeding like Cassidaria carinata Lam., from the Paris 
Basin Eocene, and imitates all the variations through which that one passes. 
In fact, it is very difficult to say why it is not the same species, and I have 
therefore placed it under the same specific name. It corresponds in nearly 
all points with P. brevidenta Aldrich, Jour. Cin. Soc. Nat. Hist., July, 1885, p. 
152, Pl. 3, Figs. 19@ and 20, but there is no evidence of the single varix on 
the whorls as in that one, although I have not seen quite enough of the 
matrix to ascertain positively if it may not have been provided with this dis- 
tinctive mark. 
Formation and locality: In the upper layers of the Upper Green Marls, 
at Shark River, New Jersey. Collections of Rutgers College and Am, 
Mus. Nat. Hist. 
