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, 



Circumference of antler nine inches from the interfrontal suture. 



Length of metacarpal bone, ..... 



Breadth of upper extremity of do., .... 



Breadth of lower extremity of do., .... 



Circumference of middle of shaft of do., 



Cervns Warreni. 



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



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

 Sands of the Niobrara River, Nebraska. 



Inch. 



Li 



7 





4 



10 



8 



10 



1 



6 



1 



10 



7 





14 



6 



2 



4 



2 



9 



5 



10 



Pliocene. 



OREODONTIDM 

 OREODON. 



Oreodon Cnlbertsoni. 



See page 86, PI. VI, Fig. 1 ; VII, Fig. 2 ; IX, Figs. 1, 2. 

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

 Oreodon prisoum, Leidy : Proc. Ac. Nat. Sc. 1851, 238. 

 Cotylops speciosa, Ibidem, 239. 

 Oreodon robustmn, Ibidem, 276. 

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



—4; Anc. Fauna Neb. 1853, 45, PL IL HI, 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, PI. XI, Figs. 2, 3, XIIL 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. 



