r?l. BirSARELLTTS. 2] 1 



1. Bnsarellus nigricollis. 



Busard roux de Cayenne, Maud. Enc. Meth. p. 543 (1784). 

 Black-necked Falcon, Lath. Gen. Syn. Suppl. i. p. 30 (1787). 

 Falco nigricollis, Lath. Iiul. Om. i. p. 3-5 (1790). 

 Le Buserai, Lecaill. Ois. d'Afr. i. p. 84, pi. 20 (1799) ; Simdev. Crit. 



om Levuill. p. 2o (1858). 

 Falco busavellus, Daud, Traite, ii. p. 168 (1800, ex LevailL). 

 Buzzaret, Lath. Geii. fSpi. Suppl. ii. p. 32 (1801). 

 Cabeza blanca, Azara, Apunt. i. p. 78 (1802). 

 Falco melanobronchos, Shaw, Gen. Zool. vii. p. 167 (1809). 

 Circus leucocephalus, Vieill. N. Diet. iv. p. 465 (1816). 

 Buteo nigricollis, TleiU. K Diet. iv. p. 473 (1810) ; G?-ay, Gen. B. i. 



p. 15 (1845) ; ruchei: Rev. et Mag. de Zool. 1850, p. 85 ; Burm. Th. 



Bras. ii. p. 47 (1856) ; Schl. Mus. P.-B. Buteones, p. 17 (1862) ; 



Gray, Hand-l. i. p. 9 (1869). 

 Circus busarellus, Bonn, et Vieill. Enc. Meth. iii. p. 1212 (182.3). 

 Buteo busarellus, Vi(/. Zool. Journ. i. p. 340 (1824) ; Gray, Gen. B. i. 



p. 15 (1845). 

 Aquila niilvoides, Spi.v, Av. Bras. i. pi. If? (1824). 

 Moi-plmus milvoides, Ciiv. Reyne An. i. p. 330 (1829). 

 Haliaetus milvoides. Gray, Cat. Accipitr. 1844, p. 12 ; id. Gen. B. i. 



p. 17(1845). 

 MorpLnus nigricollis, Gray, Gen. B. iii. App. p. 1 (1849). 

 Buteogallus busarellus, Bp. Consp. i. p. 17 (1850). 

 Ichthyoborus nigi'icollis, Kaup, Contr. Om. 1850, p. 76 ; Pelz. Om. 



Bras. pp. 3, 394 ( 1871). 

 Buteogallus nigricollis, Strickl. Orn. Syn. p. 43 (1855) ; Scl. S^ Salv. 



Nomencl. p. 119 (1873). 



Adult male. Above bright diestnut, with narrow black shaft- 

 stripes to the feathers of the back and wing-coverts ; greater coverts 

 blackish on the inner web, the outermost of this series, as well as 

 the primary coverts, entirely black ; quills black above and below ; 

 secondaries browner, and tipped with fulvous, and more or less 

 chestnut at base of inner web ; the innermost bright chestnut, like 

 back, shafted with black and more or less inclining to blackish on 

 both webs ; upper tail-coverts bright chestnut ; tail chestnut at 

 base, black for apical half, narrowly tipped with whitish, the chest- 

 nut base crossed with three or four bands of black ; head and neck 

 aU round creamy buff, narrowly streaked with black on the crown ; 

 lower part of throat black, forming a conspicuous patch ; rest of 

 under surface uniform bright chestnut, except on fore neck, which 

 inclines to fulvous ; under wing-coverts and axillaries chestnut, a 

 little darker than the breast. Total length 18 inches, culmen 1-85, 

 wing 15, tail 7'5, tarsus 3-35. 



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

 length 22-5 inches, wing 18-1, tail 8, tarsus 3-8. 



Hah. The same as that of the genus. 



a. $ ad. St. Brazil. Major-Gen. T. Hardwicke [P.]. 



b. Ad. St. Brazil. Dr. J. E. Gray [P.]. 



c. S ad. sk. Island of Mexiana. A. R. Wallace, Esq. [C], 

 (/. Ad. sk. Demerara. R. B. Sharpe, Esq. 



(i2 



