76 BULLETIN OF THE 



Measurements. 



Merycochcerus cenopus. Merychyus elcgans. 



m. 



Carpus, height 030 



" breadth 044 



Lunar, height 025 



" breadth proximal end 014 



Metacarpal II., length 049 



" " breadth proximal end . . .008 



" III., length 064 



" " breadth proximal end . . .019 



" IV., length 057 



Phalanges of IV. digit, length 057 m . 



Astragalus, height 039 .027 



" breadth 023 .014 



Metatarsal II., length 050 .056 



" III. " 062 .067 



" " breadth proximal end . . .015 .009 



" IV., length 066 



" V., " 051 



SUID^J. 



DICOTYLES. 



Several species of peccaries have been described from the Loup Fork beds. 



The Clifford collection contains two jaw 

 fragments, apparently of different species. 

 One of these differs from existing species 

 in the fact that the last lower premolar 

 is of much simpler construction than the 

 Figure 6. — Fragment of mandible of mo l ars an d more perfect specimens would 

 Peccarv X • 



probably show that this represents a dis- 

 tinct genus; but it would be premature to propose a name for it in the absence 

 of more complete material. 



GELOCID^J. 



BLASTOMERYX, Cope. 



This genus of true ruminants is abundantly represented in the collection. 

 The type species, B. gemmifer, Cope, is from the Loup Fork, and differs from 

 the closely allied Cosoryx chiefly in the brachyodont dentition. The later 

 described species from the John Day formation not improbably belong to Pa- 

 Iwomeryx, from which Blastomeryx is distinguished by the absence of the char- 

 acteristic fold on the lower molars, and the greater narrowness and compression 

 of the molar crowns. 



