252 



FALCONID^. 



>n,M, o. Juv. sk. 

 p, q. Ad. sk. 

 ;•, s. Imm. sk. 

 t. Ad. sk. 

 «. Juv. sk. 



V. Skeleton. 

 w. Skeleton. 

 x,y. Sterna. 



Nepal. 



Nepal. 



Nepal. 



Assam. 



India. 



B. II. Hodgson, Esq. [P. 



B. H. Hodgson, Esq. P. 



B. H. Hodgson, Esq. [P. 



J. Gould, Esq. [P.]. 



Prince Frederick of Schleswig- 



Holstein [P.]. 

 Zoological Society. 

 L. Eraser, Esq. [C.]. 

 B. II. Hodgson, Esq. [P.]. 



2. Nisaetus spilogaster. 



487 {ex Du 

 s. P.-B. As- 

 Heugl. Orn. 



13 (1869) ; 



Join. Lisb. 



Spizaetus spilogaster, Bp. Rev. et Mag. de Zool, 1850, p 



Bm, MS.) ; Strickl. Orn. Syn. p. 73 (1855) ; Schl. Mu 



tures, p. 12 (1862) ; Layard, B. S. Afr. p. 14 (1867) ; 



N.O.-Afr. i. p. 57 (1869) ; Gray, Hand-l. B. i. p. 



Finsch u. Hartl. Vog. Ostafr. p. 48 (1870) ; Bocage. 



1873, p. 3 ; Schl. Berne Accipitr. p. 59 (1873). 

 Spizaetus zonurus, Mull. Naum. 1850, p. 27 ; id. Beitr. Orn. Afr. 



Taf. 1 (18.5.3). 

 Aquila bonellii, Brehtn, J. f. O. 18-53, p. 204 ; Heiigl. J. f. 0. 1861, 



p. 193 ; Layard, B. S. Afr. p. 11 (1867). 

 Spizaetus leucostigma, Jleugl. Syst. Uehers. p. 7 (1856). 

 Spizaetus ayresii, Gurney, /6js,1862,p. 149, pi. 4; id. Ibis, 1864, p. 356. 

 Aquila fasciata, Gurney, Ibis, 1868, p. 138. 

 Pseudaetus spilogaster, Gurney, in Anderss. p. 7 (1872). 



Young. Above brown, with slight spots and mottlings of white 

 at the base of the scapulars and upper tail-coverts ; head also dark 

 brown, the hinder neck and sides of the face dull tawny rufous, 

 with black strealvs, more distinct on the latter, and forming a kind 

 of irregular moustache ; under surface of body uniform tawny 

 rufous, a little paler on the feathers of the throat ; under tail- 

 coverts and outermost under wiug-covei-ts, chin, and chest with a 

 few lanceolate elongated black streaks ; the lower under wing- 

 coverts with large spots of black ; quills dark brown, the secondaries 

 paler brown, tipped and irregularly marked on both webs with 

 white, the inner webs white at base, shading off into ashy white 

 before the tips, which are dark brown, the dark brown cross bars 

 showing more plainly ; tail-feathers ashy grey above, tipped with 

 white, ashy white below, and crossed with seven blackish bands not 

 weU defined, and often merging into each other ; cere greenish yel- 

 low ; biU ash-colour, black at tip ; feet greenish yellow ; iris light 

 yellow. Total length 24-5 inches, wing 17'6, tail 11-3, tarsus 4. 



Adult female. Above brownish black, the head streaked, and the 

 back, scapulars, and wing-coverts conspicuously varied with large 

 spots of white ; primaries externally ashy, and blackish brown at 

 tips, the secondaries mottled with brown or ashy and dark brown 

 at tips ; upper tail-coverts brown, largely banded and tipped with 

 white ; tail ashy grey, with a broad dark band at tip, the remainder 

 of the feathers mottled with remains of brown bars ; cheeks white, 

 slightly streaked with black ; under surface of body pure white, 

 with black streaks on the breast and irregular large spots on the 

 under tail-coverts ; under wing-coverts black, some feathers mar- 



