FALCONID^ — THE FALCONS. 



255 



The species of tliis genus are very numerous, especially within the tropics, 

 and are found all over the world, except in Australia. About thirty 

 nominal species are known, of which about fifteen distinct species, not 



10571,?. 



Buteo zonocercus (52763). 



Buteo fcoreoZw (1750; 10571). 



Buteo swainsoni (58505). 



including geographical races, belong to America. A single species, B. soli- 

 tarius {Pandon solitarius, Peale), (Gray's Hand List, I, 15, No. 136,) be- 

 lonc-s to the Sandwich Islands. The genus seems to be wanting in the 

 Australian and East Indian regions. 



The following species and races belong to the North American fauna. 



fr 



