wHiTEAVEs.] LARAMIE AND CRETACEOUS INVERTEBRATA. 81 



GASTEEOPODA. 



Entalis paupercula, Meek and Haj'den. 



Dentalium pauperculiim, Meek uni Hay den. 1860. Proc. Ac. Nat. Sc. Phil., vol. 

 XII., p. 178. 



Eiitalw? paupercula, 'Mee]i. 1870. Eep. U. S. Geol. Surv. Terr., vol. IX., p. 269, 

 pi. 18, fig. 14. 



Milk Eiver. at the mouth of Pa-kow-ki Coulee, G. M. Dawson, 1881 . 

 one specimen. 



Since the pages in which the fossils of the Fox Hills and Fort Pierre 

 Groups are enumerated were printed, a few specimens of a smooth 

 Dentalium which is probably also referable to Entalis paupercula were 

 obtained from rocks which represent one or other of these horizons, by 

 breaking up small pieces of limestone collected by E. G. McConnell in 

 1884 at Old Wives Creek, Township 10, Eange 11, west of the 3rd 

 Principal Meridian. 



Pyrifusus ISTewberrti, Meek and Hayden. 



Jimts Newherryi, Meek and Hayden. 18.56. Proc. Ac. Nat. Sc. Phil., vol. VIII., 



p. 66. 

 Fums {Pyrifusus?) Newberryi, Meek and Hayden. lb., vol. XII., p. 421. 

 Pyrifu.sus (Xeptunelia) Xewberryi, Meek. 1876. Rep. TJ. S. Geol. Surv. Terr., vol. 



IX., p. 346, pi. 31, figs. 6, a, b, c, d, e, f. 



West flank of West Butte, Montana, in the Sweet Grass Hills, and 

 near the Forty-ninth Parallel, G. M. Dawson, 1874, (H. IL North 

 American Boundary Commission) and 1881 : one adult but not very 

 well preserved specimen and two or three immature ones. 



August, 1835. 



