ASTUR. Q17 
black moustachial streak on each side and a broad median line; chest 
clear tawny-rufous; rest of under surface white, broadly banded with 
pale rufous, each bar of this color having a conterminous brown bar, the 
thighs thickly barred with ashy brown without any rufous tinge; under 
tail-coverts white; under wing-coverts white, spotted with brown or 
rufous-brown, and the axillars similarly barred. Cere orange-yellow ; 
bill black, lead-color at base; cheeks and orbits orange; feet yellow; iris 
orange-yellow. Length, 356; culmen, 27; wing, 198; tail, 160; tarsus, 56. 
“Adult female—Similar to the adult male, but much larger. Length, 
457: wing, 246; tarsus, 68. 
“Young.—Above brown, with a fully developed, occipital crest, upper 
tail-coverts banded with darker brown and tipped with white; quills and 
tail much as in the adult, the latter with five cross-bands of darker brown ; 
under surface of body white, the throat with the three characteristic 
streaks like the adult, the breast broadly streaked with pale rufous, in- 
clining to dark brown in the center of the chest, the lower breast and 
abdomen barred with pale rufous, the bars narrower and darker on the 
thighs ; under tail-coverts white, with a few narrow, nearly obsolete, cross- 
bars; under wing-coverts buff, spotted and barred with dark brown.” 
( Sharpe.) 
177. ASTUR SOLOENSIS (Latham). 
HORSFIELD’S GOSHAWK. 
Falco soloensis LATHAM, Gen. Hist. (1821), 1, 209; 
Astur soloensis SHARPE, Cat. Birds Brit. Mus: (1874), 1, 114, pl. 4, fig. 1; 
Hand-List (1899), 1, 250; Oares, Cat. Birds’ Eggs (1902), 2, 245; 
McGrecor and WorcESTER, Hand-List (1906), 41. 
Basilap (McGregor) ; Cagayancillo (McGregor) ; Luzon (Whitehead) ; Minda- 
nao (Steere Exp., Bourns & Worcester, Goodfellow). China and Indo-Chinese 
countries; in winter to Malay Peninsula, Indo-Malayan Islands, and Moluccas. 
“Adult—The adult plumage appears to be gained by a gradual mer- 
sion of the rufous stripes on the breast. Above light bluish gray, some 
of the feathers margined with darker gray; sides of face and neck gray 
like the head, but a little more dingy ; under surface of the body pale bufty 
vinous, the throat, flanks, and thighs, as well as the wader wing- and tail- 
coverts, white, with a slight grayish shade on the sides of the breast; 
quills black externally, shaded with ashy gray, under surface white at base 
of inner web, but having no distinct bars above or below; tail dull bluish 
gray above, ashy white beneath, with four or five indistinct cross-bands 
of dark brown, a little plainer underneath, but these not strictly con- 
tinuous. Cere yellow; gape and orbits yellowish; bill black, lead-color 
at base; feet yellow; iris yellow. Length, 300; culmen, 19; wing, 200; 
tail, 137; tarsus, 48. 
“Observation—A specimen from the Philippines, nearly adult in every 
respect, is much deeper slate-color above, and far more ruddy and vinous 
below, than the one described. 
