71 



Rapaces — Diurnae. 

 FALCONID^F. 



Genus Falco. (Linnaeus.) 



Sub-genus Aquila. (Brisson.) 



TAWNY EAGLE. 



Falco nwvioides. 



Falco ncevioides, 



Cuvieb. 



" rap ax, 



Temminck. 



" albicans, 



RUPPELL. 



" senegallus, 



CUVIEH. 



Aquila navioides, 



CUVIEE. I 



" fulvescens, fusca, and 





punctata, 



Geay. 



" vindhiana, 



Feanklin. 



" choJca, 



Smith. 



Kaup. Geay. 



Specific Characters. — Colour uniformly tawny, numerous faintly- 

 coloured transverse bands on the upper side of the tail. Tarsi 

 clothed. Four large scales at the end of the middle toe. 



Dimensions of an adult male in the Norwich Museum, from M. 

 Favier, of Tangiers. — Length twenty-six inches. Length of wing 

 twenty inches; beak to angle of gape two inches and a half; middle 

 toe and claw three inches; hind toe and claw two inches. 



I introduce this bird into the European list upon 

 the authority of Lieutenant Blakiston, who has described 



