BIRDS OF NORTH AND MIDDLE AMERICA 709 



(Madison River, Zortman, Fort Keogh) ; and northern North Dakota 



(Vermillion River, Qu'Appelle Valley, Fort Rice, Long Coteau River). 

 Winters from Wyoming (Green River, La Bonte Creek, Bridger 



Mountains) ; Colorado (Wet Mountains, Loveland, Walkers Basin, El 



Paso County, Berthouds Pass, Colorado Springs, Boulder County, 



Lorimer County); to California (rare — Riverdale, Riverside, San 



Diego, Ventura County, Lassen Peak region); Ai-izona (Fort Mojave); 



New Mexico (Fort Wingate, Perico, near Silver City) ; Texas (El Paso, 



Brownsville, Refugio County) ; and to northwestern Mexico (Sonora — 



Santa Cruz River and Hermosilla). 



Migrates through South Dakota; Wisconsin (Stevens Point, Gales- 



ville. Lake Koshkonong); Minnesota (Jackson County); Nebraska 



(Omaha, West Point, Black Hills) ; and Kansas (scarce) and Oklahoma 



(very scarce — camp Supply, Red River Canyon, White Fish Creek). 

 Casual in southern Ontario (Sault St. Marie); Missouri (Stone 



County); Illinois (Warsaw); and Iowa (Stone Lake, Buena Vista 



County; Blackhawk County; La Parte City.) " 



Type locality. — "Interior of North i\.merica"; 3 cotypes listed from 



mouth of Vermillion River near the Missouri, and Fort Rice, N. 



Dak.; and Berthouds Pass, Colo., the first of which may be taken as 



the restricted type locality. 



Falco aesalon (not of Gmelin) Swainson and Ricuardson, Fauna Bor.-Amer., 

 ii, 1831, 37, pi. 25 (Carleton House, Saskatchewan River). — Nuttall, Man. 

 Orn. United States and Canada, Land Birds, 1834, 558 (Carleton House; 

 Sault St. Marie; "occasionally — seen in vicinity of Boston"); ed. 2, 1840, 61 

 ("Bear River, Rocky Mts.;" etc.). — (?) Townsend, Journ. Acad. Nat. Sci. 

 Philadelphia, viii, 1839, 151 (nw. United States). — (?) Hoy, Proc. Acad. Nat. 

 Sci. Philadelphia, vi, 1853, 305 (Wisconsin).— (?) Coues, Proc. Acad. Nat. 

 Sci. Philadelphia, 1866, 43, in text (Fort Mojave; Ariz.). 



Falco {Hypotriorchis) colmnharius Coues, Proc. Acad. Nat. Sci. Philadelphia, 

 1866, 42, part (Arizona). 



Hypotriorchis richardsonii Ridgwat, Proc. Acad. Nat. Sci. Philadelphia, 1870, 140, 

 footnote (nomen nudum). — Snow, Birds Kansas, 1873, 1. 



Falco {Hypotriorchis) richardsonii Ridgwat, Proc. Acad. Nat. Sci. Philadelphia, 

 xxii, Dec. 1870, 145 (Berthouds Pass, Colo.; coll. U. S. Nat. Mus.). 



Falco richardsonii Coues, Key North Amer. Birds, 1872, 214.— Ridgwat, Bull. 

 Essex Inst., v, 1873, 186 (Colorado); Man. North Amer. Birds, 1887, 251.— 

 Coues, Check List North Amer. Birds, 1873, No. 345.— Sharpe, Cat Birds 

 Brit. Mus., 1, 1874, 408, footnote; Hand-list, i, 1899, 275. — American Orni- 

 thologists' Union, Check-list, 1886, and 2d ed., 1895, No. 358.— Cooke, 

 Bird Migr. Mississippi Valley, 1888, 119 (Nebraska, breeding, se. South Da- 

 kota; migr.; w. Kansas; La Porte City, Iowa); Birds Colorado, 1897, 76 

 (summer res. up to 11,000 feet). — Thompson, Proc. U. S. Nat. Mus., xiii, 

 1890, 537 (Mouse River, N. Dak.; Fort Pelly, Manitoba, Sept.).— Goss, Hist. 



8* It is possible that some of these casuals are really to be referred to the sub- 

 species bendirei, but in the absence of the actual specimens no reallocation is 

 possible. 



