390 EXTINCT MAMMALIA OF NORTH AMERICA. 



Pakcolhcrlum gignnteum, Leidy : Anc. Fauna Ncl). 1853, 78, PI. XVII. 

 Palwotherium ? cjujanleum, Gcrvais : Zool. Pal. Fr. 1848 — 1852, I, 187.* 

 Titanotherium, Greene : Proc. Ac. Nat. Sc. 1853, 292. 

 EotheHum americanum, Leidy : Proc. Ac. Nat. Sc. 185J, 392. 

 Leidyotherium, Prout : Trans. Ac. St. Louis, 1860, 699. 



From the lowest stratum of the tertiary deposits of the Mauvai.ses Terres of White 

 River, Dakota. The tooth supposed to be characteristic o^ Lekhjotlierium, and re- 

 ported to have been obtained near Abingdon, Virginia, is a fossil from the Mauvaises 

 Terres of White River, Dakota. Miocene. 



PERISSODACTTLA. 



RHINO CER TIDjE. 



ACERATHERIUM. 



Aceratheriam occidentale. 



See page 220, PI. XXI, Fig. 34; XXII ; XXIII, Figs. 1-3. 

 Rhinoceros oceidentalis, Leidy: Proc. Ac. Nat. Sc. 1860, 119,276; 1853, 392; 1857,89; 1865, 



176; Owen's Rep. Geol. Surv. Wisconsin, &c. 1852, 552, Tab. IX, Figs. 1, 2, XIV, XV, Fig. 



4 ; Anc. Fauna Neb. 1853, 81, PI. XII, XIII ; the present work, 220. 

 Acerotherium, Leidy : Proc. Ac. Nat. Sc. 1851, 331. 

 Acerailierium occidentale, Leidy : Proc. Ac. Nat. Sc. 1854, 157. 



Mauvaises Terres of White River, Dakota. Miocene. 



RHINOCEROS. 



Rhinoceros crassus. 



See page 228, PI. XXIII, Figs. 4-9. 



Leidy: Proc. Ac. Nat. Sc. 1858, 28 ; 1865, 176. 

 Sands of the Niobrara River, Nebraska. Pliocene, 



Rhinoceros meridianns. 



See page 229, PI. XXIII, Fig. 10. 



Leidy : Proc. Ac. Nat. Sc. 1865, 176. 

 From Washington County, Texas. Miocene ? 



Rhinoceros hesperins. 



See page 230, PI. XXIII, Figs. 11,12. 

 Leidy : Proc. Ac. Nat. Sc. 1865, 176. 



From Calaveras County, California. Miocene ? 



*Gervais in a note observes that "the animal indicated under this name by Prout is viewed by M. Pomel 

 as the type of a new genus, which he calls Menodus." I have not been able to find M. Pomere notice in 

 any of the works to which I have access. His name probably antedates that of Titanotherium. 



