86 PALEONTOLOGY OP NEW JERSEY. 



marked in Vohitomorphn. The passage from this latter genus into Vohtto- 

 derma Gabb is also so gradual as to be confusing. Taking into account the 

 above facts, there appears to be only the one reliable feature of the widen- 

 ing of the aperture and canal in the lower part of Bostellites, while in the 

 Vohitodermas the canal, and consequently the volution, is contracted into a 

 beak in front. This feature, however, becomes very obscure and confusing 

 ill such forms as V. ponderosa, herein described. (See also observations 

 under the generic descriptions of PiestocMJus). 



Genus ROSTELLITES Conrad. 



ROSTELLITES NASUTUS. 



Plate XI, Figs. 1, 2. 



Volutilithes nasuta Gabb: Jour. Acad. Nat. Sci., Phila., 2d ser., vol. 4, p. 300, PL 



LViii, Fig. 9 : Synopsis, p. 94. 

 Rostellites nasuta (Gabb) Meek: Check List Cret. and Jur. Foss., p. 21; Geol. 



N. J., Newark, 1868, p. 730 ; Gabb, Proo. Acad. Nat. Sci., Phila., 1876, p. 294. 

 Fulgoraria nasuta Gabb : Proc. Acad. Nat. Sci., Phila., 1861, p. 364. 

 Comp. R. Texana Conrad, Mex. Bound. Siirv., vol. 3, p. 128, PI. xiv, Fig. 2. 



Shell of moderately large size, sometimes attaining a length of nearly 

 or quite 5 inches. Form slender, with a proportionally short, turreted 

 spire, varying from two-thirds of the length of the body volution in 

 the casts to not more than one-third in the shell itself; number of volu- 

 tions uncertain, the type specimen having had about four; body volu- 

 tion slender, most ventricose near the upper part, marked by numerous 

 spiral ridges with broader interspaces which have possibly been marked by 

 smaller ridges between the large ones; the upper lines nearly parallel to 

 the suture, but below they become more and more oblique, so that the lower 

 ones become nearly parallel with the columella; aperture comparatively 

 broad and the lip thin; columella marked by three or four very oblique 

 folds, situated near the middle of its length; the upper three at equal dis- 

 tances from each other and the lower one a little more distant from the 

 next above. 



There is considerable difference between the several individuals which 

 T find marked with this name, and they undoubtedly represent two or more 



