MIOCENE MOLLUSC A AND CRUSTACEA. 117 



This shell somewhat resembles Pleurotoma flexuosa Emmons, Geol. Surv. 

 N. Carolina, 1858, p. 265, fig. 148, but is much more slender in proportion 

 to the entire length, besides being covered with spiral lines, of which there 

 is no mention in the description of that species. 



Formation and locality: In the gray Miocene marls at Shiloh, N. J. 

 From the collections of the National Museum. 



Genus SURCULA H. and A. Adams. 



SURCULA PARVA?. 



PL xxi, fig. 1. 



Pleurotoma parva, Conrad: Jour. Acad. Nat. Sci. Phila., vol. 6, p. 225, PI. ix, fig. 18. 

 Surcula parva, Conrad: Proc. Acad. Nat. Sci. Phila., 1862, p. 561; Meek, Check List 

 Miocene Foss., p. 21. 



" Shell subfusiform, transversely striated, with oblique longitudinal ribs; 

 upper part of the whorls concave and plain." 



A single imperfect individual, referred with some doubt to this species, 

 is among the collections from Jericho, N. J. The shell is quite small, still 

 somewhat larger than the figure given by Mr. Conrad; the spire has been 

 acute, the volutions somewhat convex, with a strong concave constriction 

 at the upper part, and are longitudinally plicated; plications about eleven, 

 rounded and distinct. Aperture elongated and narrow; beak moderately 

 long; inner lip not callous; entire surface of the shell below the constric- 

 tion marked by fine, rather even, raised, spiral lines with flat interspaces. 



Formation and locality: In the gray sandy marls of the Miocene at 

 Jericho, N. J. From the collection of the National Museum. 



