I 



698 CRETACEOUS PALEONTOLOGY. 



Turritella lippincotti Whitfield. 



Plate LXXIX., Fig. i. 



1892. Turritella Lippincotti Whitf., Pal. N. J., vol. 2 (Monog. 

 U. S. G. S., vol. 18), p. 145, pi. 18, figs. 23-24. 



Description. — ^"Shell of medium size, rather rapidly tapering, 

 the apical angle being about 20'° or less. Volutions flattened on 

 the surface in the direction of the spire, with scarcely perceptible 

 suture lines where the shell is preserved, and only very moderate 

 ones in the cast; their form in a section being trapezoidal, the 

 upper and lower outer angles being rather sharply angular, even 

 in an, internal cast ; basal face scarcely convex ; volutions numer- 

 ous, a fragment measuring not quite 2 inches in length, with a 

 diameter at the lower end of five-eighths o-f an inch, retaining 

 seven, with space at the upper portion for about five more. Sur- 

 face of the shell marked, in the only specimen which preserves it, 

 by fine rounded spiral, thread-like lines over the entire surface." 

 (Whitfield.) 



Remarks. — Whitfield's types of this species are casts from 

 natural moulds which show the external features of the shell. 

 The species is characterized by the flat outer surface of the volu- 

 tions, and the slightly impressed suture. Whitfield does not 

 illustrate the casts of the species, although he mentions their 

 characters. Li the recent collections of the Survey this species 

 has not been observed, at least not in a condition tO' exhibit its 

 external markings. 



Formation, and locaiity. — Navesink marl, Crosswicks Creek, 

 Holmdel (Whitfield). 



Geographic distribution. — New Jersey. 



Turritella lenolensis n. sp. 



Plate LXXVIIL, Fig. 8. 



Description.— Kpic'^l angle about 18°. The type specimen is 



, the apical portion of a shell 11.5 mm. in length and 4.5 mm. in 



maximum diameter, and retains 10 volutions. The volutions are 



