30. ASTTTBINA. 207 



5. Asturina magnirostris. 



L'Eperviei- a gTos bee de Cayenne, Buff. PI. Enl. i. pi. 464. 



Great-billed Falcon, Lath. Gen. Srjn. p. 103 (1781). 



Falco niag-uirostris, Gm. S. N. i. p. 282 (1788). 



Astur niagnirostiis, Vigors, Zool. Journ. i. p. 338 (1824) ; Gray, Gen. 



li. i. p. 27 (1849) : Strickl. Orn. Syn. p. 120 (1855) : Gray, 



Ilancl-l. B. i. p. 30 (1869). 

 Falco insectivorus (pt.), Sjnx, Av. Bras. i. p. 17, t. 8fl! (1824). 

 Nisus magnirostris, Less. Man. i. p. 96 (1828). 

 Rupornis magnirostris, Katip, Classif. Sduy. u. Vdy. p. 120 (1844) ; 



Cab. in Schomb. Bcis. Guian. iii. p. 737 (1848). 

 Asturina magnirostris, Scl. P. Z. S. 1857, p. 261 ; Scl. 8f Salv. P. Z. S. 



1869, p. 131; iid. Nomencl. p. 118 (1873). 

 Astur macrorhynchus, Pelz. Orn. Bras. pp. 6, 398 (1871). 



Young. Above blackish brown, the head and hind neck streaked 

 with white, the scapulars also with large concealed white spots of 

 the same ; upper tail-coverts ochraceous, with arrow-shaped bars of 

 brown ; scapulars dark brown, like the back, with somewhat paler 

 margins. 



Adult male. Above pale ashy grey, the ujiper tail-coverts alter- 

 nately banded with black and white, the greater wing-coverts a 

 little darker ash-colour than the back ; primary coverts and quills 

 rufous at the base, ashy brown at the tips, the outer secondaries 

 externally ashy grey, the inner ones entirely of this colour, like the 

 back, the primaries narrowly and irregularly barred with blackish, 

 broader but less distinct on the secondaries, the inner face of the 

 wing pale rufous, the bars nearly obsolete ; tail ashy grey, with 

 three broad cross bands of black ; sides of face, throat, and chest 

 ashy grey, like the back, the chin a little inclining to whitish ; rest 

 of under surface white, with broad bands of pale rufous on the 

 breast, becoming very narrow and inclining to ashy grey on the 

 abdomen, flanks, and thigh-feathers ; under wing- and tail-coverts 

 white, with a few indistinct ashy bars, almost obsolete except on 

 the lower under wing-coverts. Total length 14 inches, culmen 1-3, 

 wing 8-7, tail 6-2, tarsus 2-5. 



Adult female. A little larger than the male. Total length 

 15 inches, culmen 1-2, wing 8-9, tail 6"5, tarsus 2-5. 



Hob. Columbia, Guiana, and Amazonia. 



W. Wilson Saunders, Esq . 

 [P.]. 



T. K. Salmon, Esq. [C.]. 



T. K. Salmon, Esq. "CI. 



Mr. Dyson [C.]. 



A. Goering, Esq. [C.J. 



A. R. Wallace, Esq. [C.]. 



M. Claussen [P.]. 



Roval Geographical So- 

 ciety [P.]. 



Sir R. Schomburgk [P.] 



R. B. Sharpe, Esq. fP.T. 

 IX W. Mitchell, Esq. [P. 

 D. W. Mitchell, Esq. [P.' 



