328 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



brownish gray; cere and gape greenish yellow; bill blackish; feet wax 

 yellow; claws black. 



Juvenal (sexes alike). — Light phase: Same as the immature (first 

 winter plumage). Melanistic phase: Same as the immature (first 

 winter plumage). 



Natal down. — Varies from almost pure white to pale brownish gray; 

 down present on the front and sides of the tarsi to the toes. 



Adult males.— Wmg 397-416 (407.4) ; tail 210-232.2 (222.4) ; culmen 

 from cere 20.8-23.9 (22.3) ; tarsus 65.8-75.8 (69.2) ; middle toe without 

 claw 32-38.2 (35.3 mm.) (22 specimens). 



Adult females.— Wing 395-438 (411); tail 212.5-234.9 (222.1); 

 culmen from cere 20-26.4 (23); tarsus 66-72.4 (69.2); middle toe 

 without claw 31.8-36.9 (33.8 mm.) (9 specimens). 



Range. — Breeds from the interior of Alaska (Fort Yukon), and the 

 Aleutian Islands and southwestern Alaska, Yukon Territory (Herschel 

 Island), Victoria Island, southwestern Baffin Island, Southampton 

 Island, northern Mackenzie (Anderson River, Franklin Bay, Horton 

 River, etc.), northern Keewatin (Cape Fullerton), northern Quebec 

 (Ungava), and northern Labrador (Cape Chidley, Port Burwell, 

 Okak, Ailik, Davis Inlet, Hamilton Inlet) south to southeastern 

 Quebec (Wolf Bay), Newfoundland (Codroy), southern Ungava (Seal 

 Lake), probably Manitoba (Churchill), and southern British Columbia 

 (Quesnal) . 



Winters from southern British Columbia (Sumas, Okanagan Valley), 

 central Alberta (Glenevis), southern Saskatchewan (Eastend), North 

 Dakota (Charlson, ArgusviUe), Minnesota, Nebraska, Wisconsin, 

 Michigan, southern Ontario, southern Quebec (Montreal, Quebec), 

 Newfoundland (Avalon Peninsula), New Hampshire, and Maine 

 (Norway) south to Delaware, southeastern and northwestern Pennsyl- 

 vania (Philadelphia, Erie), to Maryland (Baltimore, Sandy Spring), 

 and casually to the District of Columbia (Washington), Ohio, Indiana, 

 Illinois, Missouri, Oldahoma (Norman, Tyrone), Kansas, Colorado, 

 Utah, Nevada, casually to New Mexico (Zuni, Tularosa, Rio Mim- 

 bres), southern Arizona (Tucson (?), Fort Whipple), Washington, 

 Oregon, and CaUfornia (south as far as Santee, where rare); casual 

 in North Carolina (Blowing Rock), South Carolina (Capers Island), 

 Louisiana (Mandeville, West Baton Rouge), Georgia (Thomasville), 

 West Virginia (French Creek), and Texas (Fredericksburg, Electra, 

 Aransas River). Accidental in Bermuda and St. George Island, 

 Pribilof Islands. 



Tijpe locality.— ^' In freto Hudsonis et nova terra," that is, New- 

 foundland. 



Falco s.-johannis Gmelin, Syst. Nat., i, pt. 1, 1788, 273 (Hudson Strait and St. 

 Johns, Newfoundland; based on St. Johns Falcon Latham, Synop. Birds, i, 



