104 PALEONTOLOGY OF NEW JERSEY. 
tion of the outer lip attached to the columella in such a way as to be easily 
mistaken for a protuberance; and this is possibly what has given rise to 
the idea of a rudimentary tooth at the upper end of the columella. None 
of the other examples which I have examined show any evidence of any 
rudimentary tooth. In other respects the description copied above corre- 
sponds with the features as presented by other individuals. The species 
differs from the requirements of the genus Cantharus in the absence of the 
canal at the upper end of the aperture. Of this there is not the slightest 
evidence on any of the examples examined. The outer lip joins the body 
whorl with but very slight angularity, and the shell is continued across 
and thickened at the junction. I can scarcely think this can be the same 
as Purpura tridentata Tuomey and Holmes: Plioe. Foss. 8. Car., p. 137, Pl. 
xxvii, fig. 9. That species is figured with a decided posterior notch, which 
I do not think this one ever possessed. I strongly suspect that Emmons’s 
Fusus exilis, Geol. N. Car., 1858, p. 251, fig. 111a, may be this same species, 
although there is no possibility of that one being the same as Conrad’s FP. 
exilis figured in his Miocene Foss., Pl. xuix, fig. 1, as cited by him under 
his F’. exilis in his catalogue given in the Proceedings of the Academy of 
Natural Sciences Philadelphia, 1862, p. 560. If I am correct in consider- 
ing this species the same as that of Dr. Emmons, then its name should be 
Cantharus exilis Emmons sp. 
Locality: The type specimen is from Shiloh, N. J. Others are from 
near Shiloh and Jericho, N. J. In the collection at Rutgers College and 
that of the National Museum. 
Family NASSIDZ. 
Genus TRITIA Risso. 
TRITIA TRIVITTATOIDES, 0. sp. 
Pl. x1x, figs. 1-3. 
? Nassa trivittata (Say), Heilprin: Proc. Acad. Nat. Sci. Phila., 1887, pp. 398 and 403. 
Shell small, elongate-ovate or pupeform, not exceeding half an inch 
in total length, and tew examples reaching that size. Whorls about seven 
in number, including the mammillar apical one, convex and moderately 
increasing in diameter with increased number; sutures distinct but not chan- 
ae 
=a >t 
