12. IBTCTER. 41 



'/. 5 jii'^' sk. Island of Mexiana. A. R. Wallace, Esq. [C.]. 



e. Ad.sk. Island of Mexiana. A. R. Wallace, Esq. JC.]. 



/. 5 juv. sk. BaiTa, Rio Negro. A. R. Wallace, Esq. [C.J. 



g. Ad. sk. Bogota. R. B. Sharpe, Esq. [P.]. 



A. Ad. sk. Bay of Panama. Capt. Kellett and Lieut. Wood [P.]. 



8. Ibycter chimango. 



Chimango, Azara., Apunt. i. p. 47 (1802). 



Polyborus chimango, Vieill. N. Diet. v. p. 260 (1816) ; Cah. 8r Tsch. 



Faun. Peruaii. p. 79 (1845) ; B'Orb. Voy. Am. Merid. Ois. p. 60 



(1835); ScM. Mm. P.-B. Polybori, p. 6 (1862). 

 Haliaetus chimango, Less. Traite, Py43 (1831). 

 Aquila pezopora, Meyen, Beitr. p. 62, pi. 6 (1834). 

 MHvago chimango, I)ano. Voy. Beagle, Birds, p. 14 (1841); Gray Sf 



Mitch. Gen. B. i. pi. 5 (1844) ; Bp. Consp. i. p. 13 (1850) ; Strickl. 



Orn. Si/n. p. 20 (1855) ; Pek. Verh. z.-b. Wien, 1862, p. 136 ; Gurney, 



Cat. Rapt. B. Nortv. Mus. p. 26 (1864) ; Gratj, Hand-l. B. i. p. 5 



(1869) ; Pelz. Orn. Bras. p. 392 (1871) ; Scl. Sf Salt: No^nencl. Av. 

 ^ Neotr. p. 122 (1873). 

 Milvago pezoporus, Darioin, Voy. Beagle, Birds, p. 13 (1841) ; Strickl. 



Orn. Syn. p. 20 (1855). 

 Ibycter chimango, Katip, Arch. f. Naturg. xvi. p. 41 (1850). 



Adult. Above rufous brown, with ashy-brown margins to the 

 feathers, not very distinctly indicated ; head and neck more de- 

 cidedlj' rufous, with longitudinal black centres to the feathers, giving 

 a somewhat striped appearance ; ^ving-coverts coloured like the 

 back ; primary coverts whitish, freckled minutely with greyish 

 brown, with three very indistinct narrow cross lines of brown ; quills 

 deep brown, with white shafts, and externally shaded with ashy 

 grey; secondaries coloured like back; primaries whitish at base, 

 externally freckled with greyish brown like the primary coverts ; 

 inner face of quills at base buff, more rufous towards the inner ones, 

 which are also slightly barred ; upper tail-coverts dull white ; tail 

 ashy grey, whitish at base, minutely freckled with greyish brown 

 and crossed with a broad subterminal band of dark brown, the tip 

 whity brown ; frontal feathers and a narrow superciliary line ter- 

 minating above the ear black ; sides of face and of neck brownish 

 ochre ; the cheeks slightly streaked with black ; under surface of 

 body brownish ochre, with distinct shaft-stripes of dark brown, and 

 the feathers inclining to whitish ashy at tip, causing a somewhat 

 mottled appearance ; thighs and under tail-coverts paler ochre, the 

 latter inclining to whitish ; under wing-coverts rufous brown, barred 

 with ochre, the greater ones entirely of the latter colour, with nar- 

 row brown cross bars ; cere dull pink ; feet bright yellow ; iris 

 hazel-brown. Total length 15-7 inches, culmen 1*1, wing 11-5, 

 tail 6:7, tarsus 2-55. 



Young. Very similar to adult, but more rufous ; the feathers of 

 the upper surface tipped with whitish, and tlie under surface also 

 more distinctly mottled with the latter colour ; thighs deep rufous 

 ochre ; quUls much as in adult, but the base of primaries and the 

 primary coverts more coarselj* vermiculated and washed with rufous ; 

 tail creamy buff at base, shading into rufous at tip, all very coarsely 



