764 CRETACEOUS PALEONTOLOGY. 



very faint indications of spiral striae may be imagined on the cast, 

 but can scarcely be said to exist." (Whitfield.) 



Remarks. — As this species usually occurs, the anterior beak. is 

 more or less injured, often being broken off close up tO' the body 

 of .the outer volution. Even the original specimen of Whitfield's 

 figure 5, showing the extended anterior canal, nO' longer preserves 

 that portion of the shell, it having been injured apparently since 

 the figure was drawn. The specimens obsei-ved vary somewhat 

 in the number oi nodes present, Whitfield gives the number as 

 10 or 12, but about nine seems to be a commoner number. The 

 abrupt contraction O'f the lower side of the outer volution to the 

 base of the anterior canal, and the single rather strong revolving 

 fold upon the columella are characteristic features of the shell. 

 One internal cast preserves a series of impressions of crenula- 

 tions along the lower half of the aperture at distances of about 

 one mm. apart, which only extend back from the aperture for a 

 space of two or three millimeters. One specimen from Mullica 

 Hill .which preserves the greater portion of the shell is apparently 

 a member O'f this species. The shell is rather thick, the nodes are 

 sharper and much more pronounced than on the casts, and the 

 entire surface is marked by distinct, rather coarse revolving costse 

 a little over one millimeter apart. 



Formation and locality. — ^Navesink marl, near Crawfords Cor- 

 ner (126^), Crosswicks Creek (149, 195), Mullica HiU (169^),. 

 Cream Ridge (Whitfield). 



Geographic distribution. — New Jersey. 



Odontofusus mucronata (Gabb). 

 Plate XCV., Figs. 5-11. 



1861. Vohita mucronata Gabb, Proc. Acad. Nat. Sci. Phil.. 



(i86i),p. 323. 

 1864. Voluta mucronata Meek, Check List, Inv. Poss. N. A., 



Cret. and Jur., p. 21. 

 1868. Volutilithes mucronata Con., Cook's Geol. N. J., p. 730. 

 1876. Volutoinorpha mucronata Gabb, Proc. Acad. Nat. Sci. 



Phil. (1876), p. 293. 



