. 
68 PALEONTOLOGY OF NEW JERSEY. 
O. rostellaroides, but differs from O. typicus, 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, 0. 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 rounded, 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 Anchura in its upper whorls, but in the body volution loses 
this resemblance by wanting the angularity and in its increased size toward 
the aperture; also in its straight beak and columella, and solitary fold. It 
differs from O. typicus, 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. 
