320 



Anthracotherid^e. 



ELOTHERIUM. 



Pomcl : Bibl. Univ. Geneve, Archives, 1847, 307. 



Entelotlon. Ayinard : Mem. Soc. Agric, &c., du Pny 1848, 240. 



Archcvotherium. Leidy : Pr. Ac. Nat. Sc. 1850, 90. 



Elotherium Mortoni 1 



Leidy : Pr. Ac. Nat. Sc. 1857, 175 ; Ext. Maui. N. America 1869, 388. 



Noticed from Wyoming, page 125, and represented by Figs. 28, 29, Plate 

 VII. 



Elotherium imperator. 



Inferred from several mutilated teeth from the Miocene of Oregon, de- 

 scribed page 217, and represented in Figs. 3, 4, Plate II, and Fig. 27, 

 Plate VII. Supposed to be the same as E. superbum in Pr. Ac. Nat. 

 Sc. 1870, 112. 



Elotherium ingens. 



Leidy : Ext. Mam. N. America 1869, 388 ; Pr. Ac. Nat. Sc. 1870, 112. 



Noticed from the Miocene of Oregon. Originally from the Miocene of 

 White River, Dakota. 



FAMILIES UNDETERMINED. 



HYOPSODUS. 



Hyopsodus PAULUS. 



Leidy : Pr. Ac. Nat. Sc. 1870, 110 ; 1872, 20 ; Hayden's Eep. Geol. Sur. Wyo- 

 ming 1871, 354; Hayden's Eep. Geol. Sur. Montana 1872, 363. 



To this species, described page 75, I refer Figs. 1 to 9, 18 to 22, Plate VI. 

 From the Bridger Eocene of Wyoming. 



Hyopsodus minusculus. 



This species, described page 81, is represented by Fig. 5, Plate XXVII. 

 From the Bridger Eocene of Wyoming. 



MICROSYOPS. 



Leidy : Pr. Ac. Nat. Sc. 1872, 20 ; Hayden's Prelim. Eep. Geol. Sur. Montana 



1873, 363. 

 Limnotherium. Iu part of Marsh : Am. Jour. Sc. 1871, II, 42. 



MlCROSYOPS ELEGANS. 



Limnotherium elegans. MarsU : Am. Jour. Sc. 1871, II, 43. 



Microsyops gracilis. Leidy : Pr. Ac, Nat. Sc. 1872, 20 ; Hayden's Prelim. Eep. 

 Geol. Sur. Montana 1872, 363. 



