176 FALCONIDJE. 



black bars ; under wing-coverts white, as also the inner web of the 

 quills ; cere and feet yellow ; iris yellowish brown. 



In the foregoing stage, which does not occur in the allied Biiteo 

 jalal, the under tail- coverts always incline more or less to rufous, 

 which sometimes extends halfway up these coverts. Although, 

 through the progress to maturity, the plumages are so different, yet 

 in the fully adult black dress it is almost impossible to distinguish 

 the present bird from B.jacal; and the only difference that I can 

 see is, that in the latter species the silvery grey on the wing 

 is lighter, while the tail is darker and more decided chestnut. The 

 black markings on the latter never reach quite to the end, but are 

 always subterminal, and form a more or less perfect band. 



Old male. Black, the base of the quills externally ashy grey with 

 black bars ; the tail rufous, with black markings near the tip. 

 Total length 20 inches, culmen 1'55, wing 16-3, tail 7'5, tarsus 

 3-6. 



Old female. Similar to the male, but a little larger. Total length 

 24-5 inches, wing 18-75, tail 9, tarsus 3'6. 



Hah. North-eastern Africa ; the highlands of Abyssinia and ad- 

 jacent countries. 



a. Ad. st. Abyssinia. Dr. Riippell [C.l. 



b. 2 juv. st. Abyssinia. Dr. Riippell [C.J. 



c. Ad. St. Shoa. Hon. East-India Co. [P.]. 



d. 9 ad. st. Ankober, Dec. 1841 (^ams). Secretarv of State for India 



[P.]. ' 

 e,f. (f $ sk. Ankober, Dec. 1841 (^Harris). Secretary of State for India 



[P.]. 

 (J. Ad. sk. Adigi-at, Tigi'6. W. T. Blanford, Esq. [C.]. 



'h. Ad. sk. Wombarat Pass. W. T. Blanford, Esq. [C ^ 



i. Sternum. W. T. Blanford, Esq. [P, 



7. Buteo ferox. 



t 



Falco ferox, S. G. Gmelin, K. Comm. Ac. Petrop. xv. p. 442, t. x. 



(1769). 

 Falco rufiuus, Cretzschm. in Eupp. Atlas, p. 40, t. 27 (1826). 

 Buteo canesceus, Hoch/s. Benq. Sport. Mag. 1836, p. 180; Bp. Congp. 



i. p. 18 (1850) ; Jird. B. of Ind. i. p. 88 (1862) ; Bli/th, Ibis, 1863, 



p. 20. 

 Buteo longipes, Jerd. Madr. Journ. x. p. 75 (1839). 

 Butaquila leucocephala, Hodgs. in Grays Zool. Misc. p. 81 (1844). 

 Buteo leucocephalus, Hodgs. P. Z. S. 1845, p. 37. 

 Buteo aquilinus, Hodgs. J. A. 8. B. xiv. p. 176 (1845) ; Jerd. B. Lid. 



i. p. 90 (1862) ; Blyth, Ibis, 1863, p. 20; Jerd. Ibis, 1871, p. 339; 



Hume ^- Hendei-s. Lahore to Yark. p. 175 (1850). 

 Buteo rufinus. Gray, Gen. B. i. p. 11 (1849) ; Bp. Consp. i. p. 18 (1850). 

 Buteo leuciu-us, J. Fr. Kanm. Naumannia, 1853, p. 256, t. 3, 4 {nee 



Lafr.). 

 Butaetus leucunis, Naum. 8,- Moesckl. Naum. 1853,-p. 290. 

 Buteo ferox, Thicn. J. f. O. 1853, p. 108 ; Schl. Mas. P.-B. Buteones, 



p. 9 (1862) ; Gray, 'Hund-l. B. i. p. 6 (1869) ; Heugl. Orn. N.O.- 



Afr. i. p. 89 (1869) ; Hume, Bough Notes, ii. p. 274 (1870) ; Jerd. 



Ibis, 1871, p. 338: Salvad. Faun. Ital. Ucc. p. 12 (1871); Shelley, 



