328 



Described pngc 69, and represented by Figs. 33 to 35, Plate VI. From 

 the Bridger Eocene of Wyoming. 



RHINOCEROTIDyE. 



RHINOCEROS. 

 Rhinoceros pacificus. 



Leidy: Pr. Ac. Nat. Sc. 1871, 248. 



Rhinoceros occidentalis. Leidy : Pr. Ac. Nat. Sc. 1870, 112. 



Described from teeth on page 221, and represented by Figs. 6, 7, Plate 

 II, and Figs. 24, 25, Plate VII. From the Miocene of Oregon. 



Rhinoceros hesperiusI * 



Leidy : Pr. Ac. Nat. Sc. 1865, 17« ; 1870, 112; Ext. Mam. N. America, 1869, 390. 



Originally described from the ramus of a lower jaw from the Miocene 1 of 

 California. Also supposed to be indicated by teeth described page 220, 

 and represented by Figs. 8, 9, Plate II, from the Miocene of Oregon. 

 In the May number of the American Journal of Science for 1873, Professor 

 Marsh has noticed remains of rhinoceros, which he refers to two addi- 

 tional species. One named Ji. annectens is founded on remains from the 

 same formation as those of the preceding species. The other, named 

 R. oregonensis, is reputed to have pertained to the Pliocene deposits of 

 Oregon. 



families undetermined. 



AKCHIPPODUS. 



Anciiippodus riparius 



Leidy : Pr. Ac. Nat. Sc. 1868, 2.32 ; Ext. Mam. N. America, iu Jour. Ac. Nat. Sc. 



1869, VII, 403, Figs. 45, 46, Plate XXX. 

 Palwosyops minor. Marsli : Am. Jour. Sc. 1871, II, 3C. 

 TrogosHs castoridens. Leidy: Pr. Ac. Nat. Sc. 1871, 113; Ilay den's Eep. Geol. 



Sur. Moutiuia 1872, 360. 



Described page 71, under the name of Trogosus castoridcna, and also repre- 

 sented as such in Figs. 1 to 3, Plate V. 



The genus Anchippodus was originally named from an isolated tooth from 

 a Tertiary formation of Monmouth County, New Jersey. The speci- 

 men is represented in Figs. 45, 46, Plate XXX, of the seventh volume 

 of the Journal of the Academy for 1869, and is described on page 403 

 of that work. It was not nntil after the description of the lower jaw 



