312 



NORTH AMERICAN BIRDS. 



marked and blotched with deep umber-brown. These markings are chiefly 

 at one end and only vary in their depth, and are unmixed with any other 



shading or colors. 



Genus AQUILA, Auctorum. 



Aquila, M(ehr. 1752. (Type, Falco chryscetos, Linn.) 



Aetos, NiTZSCH, 1840. (Same type.) 



Eieroaetus, 1844, a,ndi Hicraetus, 1845, Katjp. (Type, Falco xKiinatus, G.MEL.) 



Pteroaetus, Kaup, 1844. (Type, Falco vuUurimis, Daud.) 



Uroaetus, Kaup, 1844. (Type, Vultur audax. Lath.) 



Pseudaetus, Hodgs. 1844. (Type, Falco bonelli, Temm.) 



Tohnaetus, Blas. 1845. (Same type.) 



Eutohnaetus, Blas. 1848. (Same type.) 



Gen. Char. Form robust and structure powerful ; the bearing and general aspect that 



9128,$. 



41901,^. 



41901, f. 



41901,^. 



W?' 







1 



34338,^ 



19124 



9128. HaliaHus leucocephalus. 41901 : 12006 : 19124. Aquila chrysaetus, var. canadensis. 



54338. Archibuteo lagopus (tarsus ft-om behind). 



o{ Buteo and Archibuteo. Wing long, the primaries long and strong, with their emargina- 



