154 FALCONID^. 



the thighs largely spotted and barred with blackish brown, as also 

 the axillaries ; the under wing-coverts fulvous, with dark brown 

 streaks. 



Adult female. Above dusky slate-colour, the head blackish ; sides 

 of face and under surface of body clear slaty blue, with distinct 

 blackish shaft-stripes, the throat paler and more whitish ; thighs 

 bright tawny rufous, with which the feathers on the side of the 

 vent are also tinged ; under tail-coverts white ; under wing-coverts 

 tawny rufous, rather duller than the thighs ; upper wing-coverts a 

 little darker than the back, but the secondaries uniform with the 

 latter ; primaries brown externally, shaded with ashy and barred 

 with blackish, showing more distinctly below, where the interspaces 

 are ashy white ; tail ashy grey, slightly tipped with whitish and 

 crossed with five distinct bands of black, the subterminal one much 

 the broadest, the interspaces white below. Total length 17'5 inches, 

 culmen 1-2, wing 10-4, tail 8-7, tarsus 2-65. 



Adult male. Similar to the female, but smaller, and having only 

 four bands on the tail. 



Hab. Brazil. 



a, b. c? $ ad. st. 



c. 2 j^"^- St. 



d. 2 juv. sk. 



e. 5 juv. sk. 

 /. (S ad. st. 



21. Accipiter bicolor. 



Sparvius bicolor, Vieill. N. Diet. x. p. 325 (1817) ; Puchet: Rev. Zool. 



1850, p. 92. 

 Nisus variatus, Less. Traite, p. 61 (1831) ; Pucher. Rev. Zool. 1850, 



pp. 6, 210. 

 Accipiter sexfasciatus, 8w. An. in Menag. p. 282 (1837). 

 Nisus sexfasciatus, Cah. in Schotnb. Reis. Guian. iii. p. 736 (1848). 

 Micrastur dynastes, Verr. in Bp. Notes Orn. p. 4 (1854). 

 Rhynchomegas dynastes, jB/j. Notes Orn. p. 4 (1854). 

 Cooperastur bicolor. Pp. Rev. et Mag. de Zool. 1854, p. 538. 

 Astur sexfasciatus, Licht. Nomencl. Av. p. 4 (1854). 

 Accipiter bicolor, Strickl. Orn. Syn. p. 110 (1855) ; Scl. (§• Salv. Ex. 



Orn. pp. 137, 170, pi. Ixix. (1868) ; Gray, Haml-l. B. i. p. 33 



(1869) ; Scl. 8f Salv. Nomencl. Av. Neotr. p. 120 (1873). 

 Accipiter pileatus (%j«?«), Scl. P. Z. S. 1859, p. 389 ; Salv. Ibis, 1861, 



p. 355 ; Zatvr. An. Lye. N. Y. vii. p. 289 (1862), ix. p. 134 (1864). 

 Accipiter erythrocnemis, Scl. P. Z. S. 1860, p. 96 (lapsu). 

 Nisus bicolor, Giebel, Thes. Oni. p. 263 (1872). 



Young. Above dark brown, the head black, the feathers mar- 

 gined with rufous, especially the upper tail-coverts, which have 

 also indications of white bars ; quiUs very deep brown, with pale 

 rufous tips, barred across with blackish brown, very distinct under- 

 neath, where the intei-spaces are ashy white ; tail ashy brown, 

 tipped and mottled near the shafts with white, and crossed with 



* Marked as from the Straits of Magellan (Capt. King), but clearly in error. 



