68 PALEONTOLOGY OF NEW JEESEY. 



0. rostellaroides, but differs from 0. ti/incus, and in the comparative strength 

 of the columella it differs from either in being more slender. The species 

 is very marked and distinct from either of them and is readily recognized. 

 On one of the examples there appears to be a very faint indication of a second 

 plication on the columella a short distance above the generic one, which may 

 or may not be real. But if a natural feature, the space between them is 

 entirely flat. Other specimens show no evidence whatever of this second 

 plication. The vertical folds crossing the volutions are also much stronger 

 on the one having the second ridge, and it may possibly indicate a distinct 

 species. 



Formation and locality : In the lower layers of the Lower Green Marls 

 at Walnford, New Jersey, at Mr. Bruer's pits, and at Upper Freehold, 

 New Jersey. 



Odontofusus rostellaroides, n. sp. 

 Plate VI, Figs. 6, 7. 



Shell slender, spire attenuate, longer than the shell below the largest 

 part of the body volution; apical angle about 30°; volutions five or six, 

 gently convex, without perceptible angle; sutures very distinct; aperture 

 prolonged in front into a moderately long, straight canal; columellar fold 

 sharp, situated about midway of the length of the canal ; volutions marked 

 by numerous vertical folds which cross them almost in a line parallel to the 

 axis of the shell, and although low and rotmded, extend from suture to 

 suture on the upper ones, and are visible considerably below the point of 

 greatest diameter of the body volution; surface shell structure unknown. 



The shell, as shown by the casts, presents much the appearance of a 

 slender form of Ancliura in its upper whorls, but in the body volution loses 

 this resemblance by Avanting the angularity and in its increased size toward 

 the aperture ; also in its straight beak and columella, and solitary fold. It 

 differs from 0. tijpkiis, herein described, in the more slender form, gently 

 convex instead of angular volutions, and in the more numerous and less 

 prominent vertical folds of the exterior surface. 



Formation and locality: In the Lower Green Marls at Holmdel, New 

 Jersey. In Prof Reiley's collection. 



