154 ALLEN'S NATURALIST'S LIBRARY. 



overhanging shelf, whereas in the Eagles the nostril is gener- 

 ally a perpendicular oval, and exposed, or, in rare instances, 

 round. 



I. THE ROUGH-LEGGED BUZZARD-EAGLE. ARCHIBUTEO 

 LAGOPUS. 



Fako lagopuS) Gmelin, Syst. Nat. i. p. 260 (1788). 

 Bitteo lagopus, Macg. Brit. B. iii. p. 193 (1840); Newt. ed. 

 Yarr. Br. B. i. p. 117 (1871); Saunders, Man. Br. B. p. 

 313 (1889); Lilford, Col. Fig. Brit. B. part xiv. (1890). 

 Archibuteo lagopus, Sharpe, Cat. B.Brit. Mus. i. p. 196 (1874); 

 Dresser, B. Eur. v. p. 47 1> pis. 334, 335 ( l8 75) ; B - O. U. 

 List Br. B. p. 95 (1883). 

 Aquila lagopus, Seebohm, Br. B. i. p. in (1883). 



Adult Female. General colour above deep brown, the head 

 and neck white, streaked with dark brown, especially on the 

 cheeks and sides of the head ; lesser wing-coverts and scapulars 

 with white bases, and margined with buff, imparting a streaked 

 appearance to these parts ; quills brown, white for the greater 

 part of the inner web ; upper tail-coverts white, with a sub- 

 terminal bar of brown ; tail white, inclining to ashy-brown and 

 tinged with rufous for the terminal third of its length, the tip 

 white with a broad sub-terminal bar of black ; under surface of 

 body white, the throat washed with buff like the sides of the 

 neck, and streaked with dark brown, more broadly on the breast; 

 lower breast and abdomen dark brown, the latter mottled with 

 buff in the centre ; under tail-coverts white ; thighs and tarsal 

 plumes buffy-white, spotted with brown ; cere yellow ; bill dark 

 horn-colour ; toes yellow ; claws dark horn-colour ; iris hazel. 

 Total length, 26 inches; culmen, 1*45; wing, 187; tail, io'o; 

 tarsus, 3*1. 



Adult Male. Similar to the female, but a little smaller. Total 

 length, 22*5 inches; wing, 17*1 ; tail, 10*0; tarsus, 2'8. 



Young Birds. Resemble the adults, but are rather browner, es- 

 pecially below, where the breast is more streaked ; the tail also 

 brown for its terminal half, with no perceptible sub-terminal 

 band. 



Characters. Distinguished from the ordinary Buzzards by the 

 feathered tarsi, and from any of the feathered-legged Eagles by 

 the different form of the nostrils, and by the lesser size. 



