402 EXTINCT MAMMALIA OF NORTH i\MERICA. 



From Bijou Hill, Dakota, the Niobrara River, Nebraska, and Washington County, 

 Texas. Pliocene. 



Hipparion afB.ne. 



Sec page 286, PL XVIII, Figs. 20-24. 



Remains from the Niobrara River. Pliocene. 



Hipparion gratnm. 



See pages 287, 326, PI. XVIII, Figs. 25—30. 



Remains from the Niobrara River, Nebraska, and Little White River, Dakota. 

 Pliocene. 



MERYCHTPPUS. 



Merychippns insignis. 



See page 296, PI. XVII, Fig. 3—7. 



Leidy : Proc. Ac. Nat. So. 1856, 811 ; 1857, 89 ; 1858, 27. 

 From Bijou Hill, Dakota, the Niobrara River, Nebraska, and from Washington 

 Co., Texas. Pliocene. 



Merychippus mirabilis. 



See page 299, 327, PL XVII, Figs. 8—15 ; XXVII, Fig. 1. 

 Leidy : Proc. Ac. Nat. Sc. 1858, 27. 



From the Niobrara River, Nebraska. Pliocene. 



ANCHITHERIDJE. 



ANCHITHERIUM. 



Anchitlierixiiii Bairdi. 



See page 303, PL XX. 

 PalcBotherium Bairdii, Leidy : Proc. Ac. Nat. Sc. 1850, 122. 



Anchithermm Bairdii, Leidy : Owen's Kej). GeoL Surv. &c. 1852, 572 ; Anc. Fauna Neb. 1853, 67, 

 PI. X, Figs. 14—21, XI ; Proc. Ac. Nat. Sc. 1853, 392 ; 1857, 89. 



Remains from the Mauvaises Terres of White River, Dakota. Miocene. 



HYPOHIPPUS. 



HypoMppus affiuis. 



See page 311, PL XXI, Figs. 11—12. 

 Anchiiherium {Hypohipims) affinis, Leidy : Proc. Ac. Nat. Sc. 1858, 26. 



From the sands of the Niobrara River, Nebraska. Pliocene. 



PARAHIPPUS. 



Parahipptis coguatus. 



See page 314, PL XXI, Figs. 7—10. 



AneJdtherium Parahippus) coynatus, Leidy : Proc. Ac. Nat. Sc. 1858, 26. 

 From the sands of the Niobrara River, Nebraska. Pliocene. 



