MOLLUSCA. 733 



angle, as seen in the cast, of somewhat less than 60, with the 

 spire slightly longer than the shell below, as viewed from the 

 back of the last volution ; volutions probably about four in num- 

 ber (the specimens being all imperfect), subangular on the peri- 

 phery above the last one, which is biangular and obliquely flat- 

 tened on the periphery, the lower angle less strongly marked 

 and less prominent than the upper one, and both crossed by 

 strong, rounded, vertical folds, which become obsolete just be- 

 low the lower angulation, but form node-like prominences on 

 them ; base of the last volution strongly and rapidly contracted 

 from the lower angulation, forming a short anterior prolonga- 

 tion or beak; the columella formerly quite slender, judging from 

 the small perforation remaining in the cast, and destitute of 

 folds or ridges; aperture large, angularly ovate, oblique and 

 pointed below and strongly angular on the outer side; surface 

 of the shell, except the vertical folds, unknown." (Whitfield.) 



Remarks. This seems to be a well defined species which can 

 be easily distinguished from any of its associates by reason of 

 the two revolving angles of the outer volution with the distinctly 

 flattened surface between. 



Formation and locality. Navesink marl, Crosswicks Creek 

 (Whitfield). 



Geographic distribution. New Jersey. 



Pyrifusus mullicaensis (Gabb). 

 Plate LXXXV., Figs. 9-15. 



1860. Pleurotoma Mullicaensis Gabb, Proc. Acad. Nat. Sci. 



Phil. (1860), p. 95, pi. 2, fig. 8. 



1 86 1. Fusus Mullicaensis Gabb, Synop. Moll. Cret. Form., p. 



108 (52). 

 1864. Fusus mullicaensis Meek, Check List Inv. Foss. N. A., 



Cret. and Jur., p. 22. 



1868. Fusus ? Mullicaensis Con., Cook's Geol. N. J., p. 730. 

 1892. Pyrifusus mullicaensis Whitf., Pal. N. J., vol. 2 (Monog. 



U. S. G. S., vol. 18), p. 52, pi. 4, figs. 16-19. 

 1892. Neptunella Mullicaensis Whitf., Pal. N. ]., vol. 2 



(Monog. U. S. G. S., vol. 18), p. 56, pi. 4, figs. 20-21. 



