EXTINCT MAMMALIA OF NORTH AMERICA. 381 



Leptattclienia decora. 



See page 127, PI. XII, Figs. 6—20. 

 Leidy : Proc. Ac. Nat. Sc. 1856, 88 ; 1857, 89. 



From the same localities as the former species. Miocene. 



lieptanchenia nitida. 



See page 129, PI. XII, Figs. 21, 22. 



From White Earth Creek, Dakota. Miocene. 



AQRIOCHCERIDJE. 



AGRIOCHCERUS. 



Agriochoerns antlqnns. 



See page 132, PI. XIII, Fig. 4. 

 Leidy: Proc. Ac. Nat. Sc. 1850, 121; 1853, 392; 1854, 157; 1857, 89; Anc. Fauna Neb. 1853, 



24, PI. I, Fig3. 5—10. Broim : Leth. Geog. 1856, 933. 

 f Eucrotaphus Jacksoni, Leidy : Proc. Ac. Nat. Sc. 1850, 90 ; Anc. Fauna Neb. 1853, 56, PL VII, 

 Figs. 4—6. Bronn : Leth. Geog. 1856, 931. 

 Mauvaises Terres of White River, Dakota. Miocene. 



Agrioohoems major. 



See page 134. 

 Leidy : Proc. Ac. Nat. Sc. 1866, 164; 1857, 89. 



? Eucrotaphus miritus, Leidy : Owen's Rep. Geol. Surv. 1852, 563, PI. XV, Figs. 1, 2 ; Anc. Fauna 

 Neb. 1853, 66, PI. VII, Figs. 1—3. Bronn : Leth. Geog. 1856, 931. 



Mauvaises Terres of White River, Dakota. Miocene. 



Agriochoerus latifrons. 



See page 135, PI. XIII, Figs. 1—3. 

 Leidy : Proc. Ac. Nat. Sc. 1867, 32. 



Mauvaises Terres of White River, Dakota. Miocene. 



CAMELIDuE. 



PCEBROTHERIUM. 



Poebrotherium Wilsoni. 



See page 141, PL XIII, Figs. 5—7. 

 Leidy: Proc. Ac. Nat. Sc. 1847, 322, PL Figs. 1—4; 1853, 392; 1854, 157 ; 1857, 89; Owen's, 

 Rep. GeoL Surv. 1852, 571 ; Anc. Fauna Neb. 1853, 19, PL I, Figs. 1—4. Pictet : Traite 

 de Paleont. 1853, I, 350. Bronn : Leth. Geog. 1856, 956. 



Mauvaises Terres of White River, Dakota. Miocene. 



PROCAMELUS. 

 Procamelus robustns. 



See page 148, PL XV, Figs. 1—4. 

 Leidy : Proc. Ac. Nat. Sc. 1858, 89. 



Sands of the Niobrara River, Nebraska. Pliocene. 



