ORDER RAPTORES. 193 



352. Haliaeetus leucocephalus (LINN.). 



Bald Eagle. 



Falco leucocephalus LINN. S. N. ed. 12, I. 1766, 124. 

 Halitztus leucocephalus BOIE, I sis, 1822, 548. 



[B 41, 43, C 362, R 451, C 534.] 

 HAB. North America at large, south to Mexico. 



SUBFAMILY FALCONING. FALCONS. 



GENUS FALCO LINNAEUS. 



Falco LINN. S. N. ed. 10, I. 1758, 88. Type, by elimination, F. subbu- 

 teo LINN. 



SUBGENUS HIEROFALCO CUVIER. 



Hierofalco Cuv. Reg. An. I. 1817, 312. Type, Falco candicans 

 GMEL. = F. islandus BRUNN. 



353. Falco islandus BRUNN. 



White Gyrfalcon. 



Falco islandus BRUNN. Orn. Bor. 1764, 2. 



[B n, C 341 0, R4I2, C 501.] 

 HAB. Arctic regions, including Arctic America and Greenland. 



354. Falco rusticolus LINN. 



Gray Gyrfalcon. 



Falco rusticolus LINN. S. N. ed. 10, I. 1758, 88. 

 [B 12, C , R 4120, C 500.] 



HAB. Iceland, Southern Greenland, and Northeastern North Amer- 

 ica, straggling southward in winter to Southern New England. 



354 a. Falco rusticolus gyrfalco (LINN.). 



Gyrfalcon. 



Falco gyrfalco LINN. S. N. ed. 10, I. 1758, 91. 

 Falco rusticolus gyrfalco STEJN. Auk, II. 1885, 187. 



13 



