722 CRETACEOUS PALEONTOLOGY. 



as these markings are exceedingly faint upon the specimen and 

 may be easily overlooked. 



Formation and locality. — Navesink marl, Crosswicks Creek 

 (Whitfield). 



Geographic distrilfution. — New Jersey. 



Rostellaria fusiformis Whitfield. 



Plate LXXXIIL, Figs. 16-17. 



1892. Rostellaria fusiformis Whitf., Pal. N. J., vol. 2 (Monog. 

 U. S. G. S., vol. 18), p. I ID', pi. 13, figs. 14-15. 



Description. — "Shell small, slender and fusiform; spire ele- 

 vated and slender, the apical angle being about 20° or 25° ; volu- 

 tions slender, slightly convex on their exposed surfaces ; four 

 only preserved in the cast, but there have been four or five more 

 above, making eight or more in all; body volution greatly pro- 

 longed in front, forming a long slender beak with a proportion- 

 ally strong axis, leaving quite a good-sized axial cavity in the 

 cast; aperture long and -narrow, pointed above and below, the 

 upper canal being extended upon the preceding volutions to- an 

 unknown extent; volutions marked by numerous, closely-ar- 

 ranged, vertical folds, 12 or more tO' the whorl." (Whitfield.) 



Remarks. — This species may be distinguished from R. curta 

 by its more slender form. It is known only in the condition of 

 internal casts. 



Formation and locality. — Navesink marl, Crosswicks Creek 

 (Whitfield). 



Geographic distribution. — New Jersey. 



Family OYPRAEIDAE. 



Genus Cypraea Linneus. 

 Cypraea mortoni Gabb. 



Plate LXXXIV., Figs. i^. 



i86o'. Cyprcea Mortoni Gabb., Jour. Acad. Nat. Sci. Phil, 2d 

 ser., vol. 4, p. 391, pi. 68, fig. 9. 



