64 PALEONTOLOGY OF KBW JERSEY. 



Sbrrifusus (Lirofusus) nodocarinatus, n. sp. 

 Plate V, Figs. 33, 33. . 



Shell of medium size, abruptly fusiform in general outline; spire 

 broad conical, the height from 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 spa;ce 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 which I have seen from the Creta- 

 ceous of New Jersey. I do not think it will prove an abundant form, as I 

 have seen but one other fragment of a cast which I 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 locaUtij : In soft and very friable, coarsely grained, green 

 marl of the Lower Bed, at Marlborough, New Jersey, in collections made 

 by Dr. Reiley. 



