Falco ptilorhyncus Temminck, Pl. Col. livr. 8 (1821), 1, 44. Pernis ptilonorhynchus Sharpe, Cat. Birds Brit. Mus. (1874), 1, 347; Hand-List (1899), 1, 271; Oates, Cat. Birds' Eggs (1902), 2, 293, pl. 14, fig. 4; McGregor and Worcester, Hand-List (1906), 44. Pernis cristatus Blanford, Fauna Brit. Ind. Bds. (1895), 3, 406 (part), fig. 98 (head); Grant, Ibis (1897), 213. Cebu (Bourns & Worcester); Luzon (Whitehead, Bourns & Worcester); Mindanao (Everett, Celestino, Goodfellow); Mindoro (McGregor); Palawan (Whitehead, Platen); Romblon (McGregor); Samar (Whitehead); Sibuyan (Bourns & Worcester); Sulu (Platen, Bourns & Worcester); Tablas (Celestino). Indian and Malay Peninsulas, Indo-Chinese countries, Ceylon, Greater Sunda Islands. Adult.--Upper parts brown, many of the feathers white basally; top of head, neck, and sides of neck light brown with heavy black shaft-lines; long crest-feathers black; scale-like feathers of lores and side of head ashy gray; chin, throat, and breast white with black shaft-lines and many feathers with long wide terminal spots of black or dark brown on the throat, forming a median and two lateral stripes; abdomen, thighs, and under tail-coverts light brown, barred with white; under surface of primaries and secondaries light gray, banded with dark brown, the basal bars broken; axillars and wing-lining tawny-brown, the latter mottled with white; tail from above light brown, with five or six wide bars of dark brown; from below the tail is light gray, crossed by dark brown bars. Bill black, its base bluish; iris bright yellow; legs dull yellow; nails black. A male from Mindoro is 570 in length; wing, 390; tail, 285; culmen from base, 33; tarsus, 45; middle toe with claw, 58. A breeding female, taken in Mindoro, February 19, 1905, is 610 in length; wing, 395; tail, 290; culmen from base, 36; tarsus, 44. Genus BAZA Hodgson, 1836. Bill stout, culmen well curved; cutting edge with two teeth, in young birds there is often a single tooth; cere small; nostrils narrow, slightly oblique; crest long and narrow; wing moderate, third or fourth quill longest; tail square; tarsus short, feathered in front for half its length, naked part reticulate. The key is based on the plumage of the young females; the adult of leucopais is unknown. Species. a1. Breast banded with pale rufous; a black streak down center of throat. ... magnirostris (p. 236) a2. Breast not banded; no black streak on throat; entire under parts pure white. ... leucopais (p. 237) 194. BAZA MAGNIROSTRIS Gray. LARGE-BILLED BAZA. Baza magnirostris Gray, Cat. Acciptr. Brit. Mus. (1844), 19; Sharpe, Cat. Birds Brit. Mus. (1874), 1, 356, pl. 10, fig. 1; Hand-List (1899), 1, 271; McGregor and Worcester, Hand-List (1906), 44. Luzon (Cuming); Mindanao (Platen, Goodfellow).