27. nuTEo. 169 



Aquila parda, Azara, torn. cit. p. G5 (1802). 



Spizaetus melanoleucus, Vieill. N. Diet, xxxii. p. 57 (1819). 



Spizaetus fuscescens, VieiU. torn. cit. p. 55 (1819). 



Falco aguia, Temm. PI. Col. i. pi. 302 (1824). 



Haliaetus aguia, Cuv, Eigne An. i. p. 327 (1829) ; Less. Traite, p. 42 



(1831). 

 Haliaetus melaiioleucua, D'Orh. Sf Lafr. Syn. Av. p. 3 (1838) ; D'Orb. 



Voy. Am. Merid. Ois. p. 76 (1847) ; Bunn. Th. Bras. ii. p. 54 



(1855) ; Gray, Hand-l. B. i. p. 17 (1869). 

 .Geranoaetus aguia, Kaup, Classif. Sang. u. Vogel, p. 122 (1844) ; Bp. 



Consp. i. p. 15 (1860). 

 Buteo aguia, Cab. u. Tscfmdi, Arch.f. Naturg. 1844, p. 2M,et Faun. 



Peruan. p. 89 (1844) ; Smuleo. Av. Te?it. p. 107 (1873). 

 Pontoaetus melanoleucus, Gray, Gen. B. i. p. 18 (1845). 

 Cuncuma melanoleucus. Gray, Cat. Accipitr. 1848, p. 25. 

 Heteroaetus aguia, Kaup, Contr. Orn. 1850, p. 74. 

 Geranoaetus melanoleucus, Strickl. Orn. Syn. p. 55 (1855) ; Burm. 



Eeise La PI. St. ii. p. 425 (1861) ; Peh. Reisc Nov. Vog. p. 7 



(1865) ; id. Orn. Bras. pp. 49, 397 (1871) ; Scl. Sf Salv. Nomencl. 



Av. Neotr. p. 119 (187-3). 

 Asturina melanoleuca, Schl. Mtis. P.-B. Asturinse, p. 5 (1862) ; id. 



Revue Accipitr. p. 102 (1873). 



Young male. Above dusky brown, the wing-coverts black, these as 

 weU as the scapulars slightly mottled with rufous, the upper tail- 

 coverts also barred and mottled with the same ; crown of the head 

 and nape ochraecous buff, longitudinally streaked with black, the 

 interscapulary feathers black in the centre, with broad rufous mar- 

 gins ; quills black, the secondaries browner and tipped with fulvous, 

 aU quills mottled with ashy grey on both webs above and below, the 

 primaries near the base, the secondaries for the greater part of their 

 extent, and varied with white below on the inner web ; tail ashy 

 grey, mottled with black, more indistinctly towards the apex, which 

 is entirely black ; sides of face and throat whitish, the latter as well 

 as the cheeks streaked with black ; breast bright ochre, with a few 

 streaks and spots of black ; rest of under surface, including under 

 wing- and tail-coverts, blackish, mottled and barred with ochre or 

 rufous ochre ; the axillaries more distinctly mottled with rufous. 

 Total length 26 inches, vdng 19-8, tail 11-5, tarsus 4-2. 



Obs. The black of the underparts appears to spread over the en- 

 tire breast, where it remains, while the rufous and ochraceous 

 colouring of the young disappears by degrees ; the mottlings on the 

 abdomen break up into regular narrow bars. 



Adult male. Above black, including the quills, which are externally 

 shaded with ashy grey; least and median coverts ashy grey, the 

 inner ones inclining to silvery grey, all finely and irregularly crossed 

 with black bars, becoming broader on the median coverts and disap- 

 pearing on the greater coverts, which are entirely black ; upper tail- 

 coverts and tail black, tipped with white ; lores whitish ; sides of 

 face and throat whitish ash-colour, with narrow blackish streaks, 

 more distinct on the ear-coverts ; chest black, with sometimes a few 

 white tips to the feathers (the remains of immaturity) ; rest of under 



