566 University of California Publications in Geology [Vol.11 



Figs. 184 to 187. Pliohippus fairbanksi Merriam. Superior cheek-teeth, outer 

 and occlusal views, natural size. Fig. 184, P 4 , no. 22307; fig. 185, type specimen, 

 P 4 ?, no. 19789; fig. 186, M 1 ; fig. 187, P 4 . Eieardo Pliocene, Mohave Desert, Cali- 

 fornia. 



Fig. 188. Pliohippus, sp. a, near mirabilis (Leidy). M 1 , no. 21323, natural 

 size. Eieardo Pliocene, Mohave Desert, California. 



Fig. 189. Pliohippus tantalus (Merriam). P 4 ?, type specimen, no. 19434, 

 natural size. Eieardo Pliocene, Mohave Desert, California. 



