104 PALEONTOLOGY OF NEW JERSEY. 



tiou of the outer lip attached to the coluiuelhi 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 descri])tion 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: Plioc. Foss. S. Car., p. 137, PI. 

 xxviii, fig. 9. That species is figui'ed with a decided i)osterior 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. Ilia, maybe this same species, 

 although there is no possibility of that one being the same as Conrad's F. 

 exilis figured in his Miocene Foss., PI. xlix, 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 Sliiloh, N. J. Others are from 

 near Sliiloh and Jericho, N. J. In the collection at Rutgers College and 

 that of the National Museum. 



Family NASSID^E. 



Genus TRITIA Risso. 



Tritia trivittatoides, u. sp. 



PL XIX, figs. 1-3. 



?]:^assa trivittata (Say), Heilprin : Proc. Acad. Nat. Sci. Phila., 1887, pp. 398 and 403. 



Shell small, elongate-ovate or pupaeform, not exceeding half an inch 

 in total length, and few examples reaching that size. Whorls about seven 

 in muuber, including the mammillar apical one, convex and moderately 

 increasing in diameter with increased number; sutures distinct but not chan- 



