136 CHECK-LIST OF NORTH AMERICAN BIRDS. 
Genus HALIZEETUS Savieny. 
Ffalieetus SavicNny, Descr. de Egypte, 1809, 35. Type, Falco 
albicilla LINN. 
[351.] Halizeetus albicilla (Linv.). 
Gray Sea Eagle. 
Falco albicitla LINN. S. N. ed. 10, I. 1758, 89. 
LfTalieetus albicilla LEACH, Syst. Cat. M. B. Br. Mus. 1816, 9. 
[B 42, C—, R 452, C 533-] 
Geroc. Dist.— Northern Europe and Asia; Greenland. 
302. Halizeetus leucocephalus (Linv.). 
Bald Eagle. 
Falco leucocephalus Linn. 8. N. ed. 12, I. 1766, 124. 
Halieetus leucocephalus Bote, Isis, 1822, 548. 
[B 41, 43,/C 362, Ria5r1,\C, 534.) 
Geoc. Dist.— North America at large, south to Mexico, north- 
west through the Aleutian Islands to Kamchatka. Breeds locally 
throughout its range. 
SUBFAMILY FALCONINZE. Fatcons. 
GENus FALCO Linn2zus. 
Falco Linn. S. N. ed. 10, I. 1758, 88. Type, by elimination, 
F.. subbuteo LINN. 
SuBGENUS HIBROFALCO Cuvier. 
fTierofalco Cuv. Rég. An. I. 1817, 312. Type, alco candicans 
GMEL.= /. islandus BRUNN. 
353. Falco islandus Brinn. 
White Gyrfalcon. 
Falco islandus BRUNN. Orn. Bor. 1764, 2. 
