EXTINCT MAMMALIA OF NORTH AMERICA. 



379 



the antler, nine inches from the interfrontal suture, is a little below the level of the 

 frontals. No brow branch appears to have existed. 



The two metacarpals differ a little in length, and the longer and more perfect one 

 exceeds in length those of the great Irish Deer, but is proportionately less robust, 

 indicating a less bulky but taller and more graceful animal. 



Measurements of the specimens are as follow : 



Breadth of the inion, .... 



Height of do., ..... 



Distance between the burrs of the antlers, . 



Diameter of occipital foramen transversely. 



Diameter of occipital foramen vertically, 



Circumfereuce of antler nine inches from the interfrontal suture, 



Length of metacarpal bone, .... 



Breadth of upper extremity of do., . 



Breadtli of lower extremity of do., . 



Circumference of middle of shaft of do., . . . . . . . 5 10 



Cervns Warreni. 



See page 172, PI. XXVII, Fig. 12. 

 Leidy : Proc. Acad. N. Sc. 1858, 23. 



Sands of the Niobrara River, Nebraska. Pliocene. 



OREODONTIDjE. 

 OREODON. 



Oreodon Culbertsoni. 



See page m, PI. VI, Fig. 1 ; VII, Fig. 2 ; IX, Figs. 1, 2. 

 Merycoidodon Culbertsonii, Leidy: Proc. Ac. Nat. Sc. 1848, 47, PL II; 1850, 121 ; 1851, 239. 

 Oreodon priscum, Leidy : Proc. Ac. Nat. Sc. 1851, 288. 

 Cotylops speciosa, Ibidem, 239. 

 Oreodon robustum, Ibidem, 276. 

 Oreodon Culbertsoni, Leidy : Owen's Rep. Geol. Surv. 1852, 548, PI. X, Figs. 4—6, XIII, Figs. 3 



—4 ; Anc. Fauna Neb. 1853, 45, PL II, III, IV, Figs. 1—5, V, Figs. 1, 2, VI, Figs. 8—11 ; 



Proc. Ac. Nat. Sc. 1853, 392 ; 1854, 35, 157 ; 1857, 89. Bronn : Leth. Geog. 1856, 930. 



Mauvaises Terres of White River. Dakota. Miocene. 



Oreodon gracilis. 



See page 94, PL VI, Figs. 2, 3. 

 Leidy: Proc. Ac. Nat. Sc. 1851, 239; 1853, 392; 1854, 157; 1857, 89; Owen's Rep. Geol. Surv. 



1852, 550, PL XI, Figs. 2, 3, XIII, Figs. 5, 6 ; Anc. Fauna Neb. 1853, 53, PL V, Figs. 3, 4, 



VI, Figs. 1—7. 

 Oreodon gracile, Leidy : Proc. Ac. Nat. Sc. 1851, 239. 



Mauvaises Terres of White River, Dakota. Miocene. 



