137 



41. Cej'vus macrotis, Say, — Mule Deer. — Upper Missouri and Platte 

 to the Cascade Range, (head of Des Chutes river.) Oregon Territory. 

 Not extending to the Pacific. Headwaters of Arkansas. — Much more 

 abundant on the upper Missouri than the Cervus leucurus. Four 

 skins, two skeletons, and about thirty separate skulls and horns, 

 were collected. 



42. Antilocapra americana, Ord. — Prong-horn Antelope; Cabree. — 

 Plains west of Missouri, from the lower Rio Grande to the Saskatche- 

 wan, and west to the Cascade and coast range of the Pacific slope. — 

 This beautiful and fleet animal is found everywhere on the open 

 grassy plains, from the mouth of the Niobrara river to the mountains. 

 Our collection contains eight skins entire, one skeleton, and a large 

 number of skulls. 



43. Ovis montana, Cuvier. — Bighorn ; Mountain Sheej). — Broken 

 ground on the upper Missouri and Platte. Rocky mountains generally, 

 as far west, at least, as Coast and Cascade mountains of the Pacific 

 slope. — Very abundant in the rugged and inaccessible portions of the 

 upper Missouri, especially the " Bad Lands." 



44. JBos americanus, Gmelin. — American Buffalo. — Formerly found 

 throughout nearly the whole of North America, east of the Rocky 

 mountains. Now confined to the plains west of the Missouri and 

 along the slopes of the Rocky mountains. 



45. VespertiUo pruinosus , Say. — All over the United States east of 

 the Rocky mountains. 



46. VespertiUo noctivagans, Leconte. — Common throughout the 

 country east of the Rocky mountains. 



47. VespertiUo novaboracensis , Gmelin. 



BIRDS. 



No. of specimens. 



1. — Cathartes aura, (Linn.) ^llig. Turkey Buzzard. All of 



North America, except the Arctic regions 1 



2. — Falco (Falco) anatum, Bonaparte. Duck Hawk. North 



America, east of the Rocky mountains 1 



3. — Falco (Hypotriorchis) cohimbarius, Linn. Pigeon Hawk. 

 Temperate North America, Mexico, Central Amer- 

 ica, Northern South America 2 



4. — Falco (Gennaia) polyagrus, Cassin. Prairie Falcon. 



Western North America 3 



5. — Falco (Tinimnculus) sparverius, Linn. Sparrow Hawk. 



Entire continent of America 5 



6. — Accipiter mexicanus, Swains. Western North America 3 



7. — Buteo swainsoni, Bonap. Swainson's Buzzard. North- 

 ern and Western North America 4 



8. — Buteo bairdii, Hoy. Baird's Buzzard. Northern and 



Western North America 3 



