CRETACEOUS FOSSILS. 73 



II. DECLIVE, n. S. 

 PL 28, Pig. 200, and 200 a. 



I propose this name for a fragment of a small species, forming 

 about three-fifths of a whorl from the non-septate portion of the 

 shell. It is sinistral; the umbilicus is about equal in diameter to 

 the greatest width of the largest portion of the whorl ; the whorls 

 appear to be nearly their own width apart. The surface is orna- 

 mented by numerous uniform, oblique ribs, nearly obsolete on 

 the ventral side, prominent on the dorsum. Section elliptical. 



Figures, natural size. 



Locality : Pence's Ranch, Butto County (Div. A.). 



This shell resembles, in size and general appearance, H. Brewerii, supra, but 

 differs in being more oblique, in the greatest diameter of the whorl being verticil, 

 instead of transverse, and in the absence of the occasional large ribs. 



TURRILITES, Lam. 



T. (sp. indet.) 

 PI. 2<i, Fig. 201. 



A fragment, showing the outer and part of the under surface 

 of about a fourth of a whorl. The outer surface is marked by a 

 series of regular, oblique, and slightly curved ribs, nearly obso- 

 lete in the middle, and each bearing four node;-, two above and 

 two below. Under surface plain. 



Figure, natural size. 



Locality: From a brown sandstone (Div. A.), near Jacksonville, Oregon. Col- 

 lection of Prof. Whitney. 



PAL. VOL. I. — 10 



