238 MANUAL OF PHILIPPINE BIRDS. 
number, one subterminal; secondaries paler brown, externally rufous; 
upper tail-coverts papery Ze with white and with dark brown 
centers; tail-feathers dark brown, narrowly fringed with white at the 
ends, and crossed with blackish bands, the subterminal one very broad, 
but not nearly so wide as the preceding interspace; a crest of white 
feathers, the Jong ones freckled with brown; head, nape, and hind neck, 
lores, sides of face, ear-coverts, cheeks, sides of neck, and entire under 
surface of body pure white, slightly washed with rufous on the head and 
hind neck; the breast, abdomen, and under tail-coverts washed with 
creamy buff; the sides of the body and flanks with slight indications of 
spots of pale tawny buff; under wing-coverts and axillars like the breast ; 
quills below ashy gray, with blackish bars on the primaries. Length, 
394; culmen, 29; wing, 274; tail, 178; tarsus, 35. 
“The typical [=type] specimen, though manifestly immature, differs 
thoroughly from the young of B. swmatrensis, and I feel sure that the 
adult bird, when discovered, will be markedly distinct.” (Sharpe.) 
“Rare and shy. Iris, legs, and feet yellow; nails black; bill black, 
slaty at base; bare flesh of head greenish yellow. One specimen had been 
eating crabs when shot. 
“A male measures 457 in length; wing, 312; tail, 199; culmen, 27; 
tarsus, 76 ; middle toe with claw, 40. A female, 457 in length ; wing, 305; 
tail, 208; culmen, 26; tarsus, 64; middle toe with claw, 43.” (Bourns 
and Worcester MS.) 
The adult of this rare species appears to be undescribed. 
Genus MICROHIERAX Sharpe, 1874. 
Bill strong; edge of mandible with a double notch forming a sharp 
tooth ; cere small; no crest ; first primary nearly equal to second and third 
which are the longest ; secondaries short; tarsus and feet strong; plumage 
black and white; length less than 200 mm. 
8 
Species. 
ataslighthy smaller 1 i ec oe ase nee eee reece eee est secas erythrogenys (p. 238) 
rslaeh thy: Larger rs cuk eee ee ee a ee ee ee eee meridionalis (p. 259) 
196. MICROHIERAX ERYTHROGENYS (Vigors). 
PHILIPPINE FALCONET. 
Hierax erythrogenys Viacors, Proc. Zool. Soe. (1831), 96. 
Microhierax erythrogenys SHARPE, Cat. Birds Brit. Mus. (1874), 1, 369; 
Hand-List (1899), 1, 273; McGregor and WorcrEsTER, Hand-List 
(1906), 44; McGrecor, Philippine Jour. Sci. (1907), 2, sec. A, 323. 
Bohol (McGregor); Luzon (Meyer, Méllendorff, Everett, Steere Exp., White- 
head, McGregor) ; Mindoro (Bourns é Worcester, Porter) ; Negros (Keay). 
Adult (sexes similar).—Above, including wings and tail, black with a 
dark green gloss ; below white; sides, thighs, and under tail-coverts black. 
