120 PALEONTOLOGY OF NEW JERSEY. 



Wood, for the fossil forms usually considered as L. Jicros. In this he has 

 been followed by F. B. Meek and Prof. Heilprin with a (juestion. In com- 

 parin<>' the New Jersey forms with the figures given of that English species, 

 by its author, I find a much greater difference than exists between these 

 fossil shells and the living specimens of L. heros. Therefore I am the more 

 inclined to difi'er from Conrad's decision and to consider these as the fossil 

 representatives of the common species of our own coast. Mr. Conrad also 

 cites Natica heros, given by Messrs. Tuomey and Holmes in their Plio- 

 cene Foss. of South Carolina, as identical with L. catenoides, Wood. In 

 this I also think him quite in error; as Tuomey and Holmes's figure repre- 

 sents a very much more upright or vertical shell, with an open umbilicus 

 and rounded conspicuous volutions up to the apex of the spire. Although 

 L. heros often possesses very ventricose volutions, those of the spire are 

 much more subdued and more deeply inserted than those of the South Car- 

 olina shell. From New Jersey I have two small individuals, having exactly 

 the characters shown in Tuomey and Holmes's figure, and consider it as an 

 entirely distinct species, and it is herein described as such. 



Formaiion and locality: The specimens representing L. heros are from 

 near Sliiloh and Jericho, N. J., and belong to the collection of the National 

 Museum and that at New Brunswick, N. J. 



Natica (Lunatia) tuomeyi, n. sp. 



PI. XXII, flgs. 6-8. 



Natica heron Ivjiomey unA Holmes: Plioc. Foss. S. Carolina, p. 114, PI. xxv, fig. 15; 

 not N. heros of Say autl others. 



Shell small to medium size, very ventricose or subglobose, with full 

 rounded volutions and deep distinct sutures; spire moderately elevated and 

 the entire shell upright and vertical in its axis. Aperture large, semicircular 

 or subovate, oblique, rounded below and rather pointed above; inner lip 

 coating the inner volution for the upper two-fifths of the extent, leaving an 

 open umbilicus below, which is clear and deep. Surface of the shell pol- 

 ished when perfect, but marked with fine lines of growth parallel to the 

 margin of the lij); and also under a, magnifier showing faint spiral lines. 



