Adult.--Above pearl-gray, paler on head and fading to pure white above eyes, on forehead, and sides of neck; lores and a narrow line above eye black; entire lower parts including under surface of wings and tail white; median and lesser coverts black but a few of the inner lesser coverts white; a few small black feathers near edge of wing; primaries and secondaries tipped with white and largely white on inner webs, primary-shafts black; tail-feathers white, except central pair which are gray above. Male from Bantayan.--Length, 330; wing, 300; tail, 143; culmen from base, 25; tarsus, 36. Female from Manila.--Bill and nails black; iris carmine; cere, gape, and legs chrome-yellow. Length, 355; wing, 300; tail, 138; culmen from base, 25; tarsus, 34. An immature female from Bohol is like the adult but the wing-feathers, including the black coverts, are widely tipped with white, and the feathers of crown and nape are edged with white and a little buff giving the head a streaked appearance. Iris light yellow; bill and nails black; cere waxy yellow; feet bright chrome-yellow. "Female, not quite adult (type).--Above ashy gray, scapulars and quills plainly tipped with white, and washed with rusty brown, especially on the interscapular region; crown white, the hinder part inclining to ashy gray, plainly streaked with rusty brown; wing ashy gray, primaries darker, all the quills, as well as the coverts tipped with white, the lesser and median coverts black, forming a conspicuous shoulder patch; tail white, shaded with ashy toward the tip, the two center feathers entirely ashy gray; under surface of body entirely white, including the under wing-coverts; under surface of quills deep ashy gray toward the tip, whitish at base. Cere yellow; bill black; feet yellow; iris red. Length, 368; culmen, 28; wing, 305; tail, 157; tarsus, 38." (Sharpe.) "Quite abundant about the open fields, but difficult to shoot. Iris bright red; legs and feet yellow; nails black; bill black, except cere and gape which are bright yellow." (Bourns and Worcester MS.) "The sole egg of the Philippine black-winged kite in the collection is a blunt oval, smooth, and devoid of gloss. It is white, thickly smeared especially at the large end, with two shades of brown. It measures: 41.9 by 31.7 mm." (Oates.) The egg described above was collected by Everett in Mindoro, December 14. Genus PERNIS Cuvier, 1817. Bill small, elongate, the cutting edge regular or slightly sinuate; nostril a narrow slit; side of head covered with short close-set feathers; no bristles nor hairs about base of bill; wings long, primaries obliquely cut on inner webs; tail composed of long wide feathers; tarsus feathered in front for its upper half, its remaining surface covered with small scales. 193. PERNIS PTILORHYNCUS (Temminck). CRESTED HONEY BUZZARD.