64 Bulletin American ATuseutn of Natural History. [Vol. XII, 



VIII. John Day. — Concluded. 

 ARTIODACTYLA. 



ELO'I HERIID.-E. 



Type. 



Boochcerus humerosus Cope ' A. M. 



Elotherium impcrator l^eidy '^ U. S. 



Bothrolabis (Dicotyles) pristinus Leidy - U.S. 



Botluolabis Iric/hDiiis Cope A. M. 



' ' rostralus Cope " 



' ' subiVquans Cope 



Chanohyus decedens Cope 



Thinohyus lenlus Marsh Y. 



' ' socialis Marsh " 



OREODONTID^. 



AgriochcErus trifrons Cope A. M. 



" guyotianus Cope , 



Agriochoerus ry derail iis Cope 



Agriochcerus (Coloreodon) ferox (Cope) 



" " macrocephaUis (Cope) 



Eporeodon occidentalis Marsh Y. 



Eucrotaphus jacksoni Leidy, part 



' ' major Leidy, part 



Eporeodon occidentalis var. leptacanthus (Cope) ^ A. M. 



" " var. pacificus (Cope) ^ " 



Eporeodon trigonocephalus (Cope) " 



socialis Marsh Y. 



" major var. longifrons (Cope) ■' A. M. 



Merycochcerus (Oreodon) superbus Leidy '' U.S. 



" chelydra Cope^ A. M. 



Merycochcerus leidyi Bettany ■* 



' ' macrostegns Cope ■* A. M. 



CAMELID.B. 



Protomeryx (Gomphotherium) sternbergi Cope A. M. 



" " cameloides WortniaiT* " 



Hypertragulus calcaratus Cope " 



' Perhaps the same as Elotherium imperator Leidy. 



^ Bridge Creek. 



^ These may probably be distinct species. 



* Bridge Creek Beds. 



