64 PALEONTOLOGY OF NEW JERSEY. 
SERRIFUSUS (LIROFUSUS) NODOCARINATUS, 0. Sp. 
Plate v, Figs. 22. 23. 
Shell of medium size, abruptly fusiform in general outline; spire 
broad conical, the height trom the broadest part of the body volution being 
somewhat less than the diameter at its periphery; beak short, slender; volu- 
tions three or four (the specimen being imperfect), somewhat bicarinate in 
the middle where there is a nearly vertical, obliquely flattened area or band, 
above which the surface slopes rapidly to the suture and is very slightly 
concave; below this point the volution contracts very abruptly to the 
short, slender canal, leaving the body volution somewhat compressed- 
discoidal or wheel-like in form, which in the specimen is possibly exag- 
gerated by vertical crushing;” periphery of the volutions marked by rather 
strong, transverse node-like vertical folds, which are also continued in less 
strength above and below, and the entire ‘surface is occupied by spiral 
ridges of considerable strength, but which alternate in size on the lower 
part of the volution; four or five of these revolving ridges occupy the 
upper side; about three mark the vertical space of the periphery, and 
seven or more may be counted on the lower side of the body volution, 
in the poorly preserved specimen used; aperture not seen. 
This is the only shell of this type whith T have seen from the Creta- 
ceous of New Jersey. [ do not think it will prove an abundant form, as I 
have seen but one other fragment of a cast which T could identify with it. 
The type of shell is more abundant in the Eocene at the south, in Ala- 
bama and Texas, where there are a number of species known. It will be 
readily distinguished from any other Cretaceous shell hitherto described, 
and from any of the Eocene forms, by the abruptly vertically compressed 
or wheel-like character of the body volution. 
Formation and locality: In soft and very friable, coarsely grained, green 
marl of the Lower Bed, at Marlborough, New Jersey, in collections made 
by Dr. Reiley. : 
