214 PALEONTOLOGY OF NEW JERSEY. 



nodes on the largest part of the volutions, but notably in the much greater 

 strength of the spiral ridges which cover the entire surface of the body 

 whorl in almost equal strength, which is not the case in that speciee. • 



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

 at Shark River, New Jersey. I have not observed it from any other local- 

 ity. Collections at Rutgers College and the Am. Mus. Nat. Hist. 



CANCELLARIID^. 



Genus CANCELLARIA Lamarck. 



Oancellakia eudis, n. sp. 



Plate XXXIII, Figs. 1, 2. 



Shell of medium, or below a medium size, broadly biturbinate, of 

 nearly equal proportion above and below the point of greatest diameter 

 exclusive of the anterior beak. Whorls four in the cast, the apical volutions 

 not represented, not having been filled with sediment, probably having been 

 filled with calcareous deposit during life, as the cast appears to be perfect. 

 Volutions sharply angular, the angulation being near the top of the prin- 

 cipal one; aperture large, subtriangular, higher than wide, acute above and 

 below; columella strong, no markings preserved on the cast, but an indica- 

 tion in its breadth, as shown on the inner lip of the aperture, of that lip 

 having been somewhat extended or perhaps having overlapped the colu- 

 mella; volutions crossed by a few strong, angular, vertical folds, not more 

 than six to the volution, but showing on the last one nearly to the base of 

 the shell ; surface of the shell marked by spiral lines with depressed spaces 

 between them. 



This cast seems to belong to that section of the genus Cancellaria 

 described under the name Trigonostoma by Blainville, in which the aperture 

 is triangular, the volutions sharply angular, and the folds of the columella 

 obsolete. The umbilicus in this species is not as large as is commonly the 

 case in this grotip. 



Formafio!) and locality : In the upper layer of the Upper Green Marls, 

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



