776 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult male.— Length (skins), 353-394 (364); wing, 218-251 (239.6); 

 tail, 160-191.5 (176.2); culmen, from cere, 17-19.5 (18.4).'» 



Adult female.— Length, (skins), 350-383 (366); wing, 223-240 

 (232.9); tail, 172.5-182 (178.8); culmen, from cere, 18.5-20.5 (19.6).* 



Northern North America; breeding in Hudsonian and Canadian 

 life-zones, northward to limit of trees in Alaska, Yukon, Mackenzie, 

 Keewatin, and Ungava, southward to Labrador (Hamilton River; 

 Hamilton Inlet), Newfoundland (?), central Alberta, Montana (cas- 

 ually ?), and southern British Columbia; winters, regularly, southward 

 throughout Canadian Zone and northern portions of Transition Zone, 

 irregularly or casually southward into the Upper Austral Zone, as far 

 as Massachusetts (Framingham, January, I860; Chatham, winter 6f 

 1883-84; Winchendon, 4 specimens, winters of 1886-87 and 1887-88; 

 Lincoln, February, 1907), Rhode Island, eastern Pennsylvania (near 

 Philadelphia), New Jersey, New York (Bay Ridge, Long Island; 

 Clark's Mills, Oneida County, winter of 1885-86; Lewis County, 

 Oct. 24 and Nov. 16, 1897; Ogdensburg, St. Lawrence County; near 

 Holly, Orleans County), southern Ontario (Hamilton; Ottawa, Oct. 

 9, 1906), Ohio, southeastern Indiana (Franklin County, January, 

 1878) ?," Michigan (Port Huron, St. Clair County, Nov. 19, 1905), 

 southern Wisconsia (Racine), northern Illinois (Kane County, Sep- 

 tember, 1869), Minnesota, Missouri (Mount Carmel, Audrain County, 

 Dec. 26, 1884, Mar. 10, 1885, Jan. 28, 1886) ?," Nebraska, and Wash- 

 ington CBeUingham Bay) ; accidental in Bermuda ( ?)," and in British 

 Islands (several records). 



" Fourteen specimens. 

 6 Eight specimens. 



Locality. 



MALES. 



One adult male from northern Russia («S. «. u^wto) 240 191.5 18.5 



One adult male from northeastern Siberia (S. «. pallasi) 232 182 18 



Nine adult males from Alaska 231.8 177.8 18.1 



One adult male from Ungava 222 160 19.5 



Two adult males from Newfoundland '. 221 172.2 18.2 



Two adult males from Alberta 232 181.2 19.2 



FEMALES. 



One adult female from Norway (S. M. «I«to) 246 188 18 



One adult female from northeastern Siberia {S. u. poZiiwO 231 180 18.5 



Four adult females from Alaska (mainland) 231 176.7 19.5 



Two adult females from Kadiak Island, Alaska 234 183.2 20 



One adult female from Ungava 232 176 20 



One adult female from Labrador 239 181 19 



Culmen, 

 from 

 cere. 



"These records doubtful, especially the first and second. 



