Part 237

Adult.--Top of head hair-brown washed with olive-green; remainder of upper parts, including exposed edges of wing-feathers and rectrices, dark olive-green; ear-coverts drab; chin and throat white with distinct dusky shaft-lines, bordered posteriorly by a crescentic, dusky band of drab, washed posteriorly with olive; breast, abdomen, and crissum yellow, pale for the greater part, but bright lemon-yellow on crissum; sides of breast and flanks dusky olive-green; feathers of thighs gray, tipped with yellow; edge of wing, under wing-coverts, and axillars white washed with yellow; inner webs of quills edged with white. Bill black; legs plumbeous; nails flesh-color. Measurements of male cotype: Length, 152; wing, 83; tail, 64; culmen from base, 17; bill from nostril, 11; tarsus, 21. Female cotype, wing, 79; tail, 67; culmen from base, 17; bill from nostril, 11; tarsus, 21.

Immature.--Sides of face and pectoral band washed with faint reddish brown; edges of wing-quills reddish brown. Bill dark brown, lower mandible lighter.

587. HYLOTERPE ILLEX McGregor.

CAMIGUIN THICKHEAD.

Hyloterpe illex McGregor, Phil. Jour. Sci. (1907), 2, sec. A, 348.

Camiguin N. (McGregor).

Adult.--Similar to Hyloterpe fallax, but slightly larger; breast and flanks more strongly suffused with yellow. Male type, length, 183; wing, 93; tail, 75; culmen from base, 17; bill from nostril, 11; tarsus, 21. Female, wing, 86; tail, 67; culmen from base, 16; bill from nostril, 12; tarsus, 22.

Young.--A young bird taken in June has most of the head and body covered with vinaceous-cinnamon down, darker on the back; under tail-coverts pale yellow; wing-feathers and rectrices blackish brown, edged with olive-green; innermost secondaries and secondary-coverts washed with vinaceous-cinnamon.

588. HYLOTERPE ALBIVENTRIS Grant.

HIGHLAND THICKHEAD.

Hyloterpe albiventris Grant, Bull. Brit. Orn. Club (June 30, 1894), 3, 49; Ibis (1894), 511; Whitehead, Ibis (1899), 225 (habits); Sharpe, Hand-List (1903), 4, 313; McGregor and Worcester, Hand-List (1906), 93. Hyloterpe mindorensis Bourns and Worcester, Minnesota Acad. Nat. Sci. Occ. Papers (December 8, 1894), 1, 22; McGregor and Worcester, Hand-List (1906), 93.

Luzon (Whitehead, McGregor, Bartsch); Mindoro (Whitehead, Bourns & Worcester, McGregor).

Adult.--Above dull olive-green, brighter on the rump, wings, and tail; sides of head and ear-coverts slightly washed with olive; chin, throat, and chest hair-brown streaked with white and slightly washed with olive; abdomen white faintly washed with yellow; sides and flanks more dusky; crissum pale lemon-yellow; axillars and wing-lining white faintly washed with yellow. Length, about 165. Male, wing, 82; tail, 70; culmen from base, 15; bill from nostril, 10; tarsus, 22. Female, wing, 79; tail, 66; culmen from base, 16; bill from nostril, 9.5; tarsus, 22.

Young.--A very young bird taken in April resembles the young of H. illex. Above dark walnut-brown; below vinaceous-cinnamon; three or four outer primaries edged with pale gray; the inner primaries edged with olive-green, some of them washed with reddish brown.

"Very rare in Mindoro. But a single female specimen obtained. It measures 165 in length; wing, 78; tail, 66; culmen, 17.8; tarsus, 21; middle toe with claw, 19." (Bourns and Worcester MS.)

589. HYLOTERPE WHITEHEADI Sharpe.

PALAWAN THICKHEAD.

Hyloterpe whiteheadi Sharpe, Ibis (1888), 311; Hand-List (1903), 4, 313; McGregor and Worcester, Hand-List (1906), 93. Hyloterpe plateni Blasius, Ornis (1888), 311.

Palawan (Whitehead, Platen, Bourns & Worcester, Everett, Celestino, White).

Adult.--Upper parts hair-brown; edges of wing-feathers and of rectrices slightly more ashy brown; auriculars and sides of neck hair-brown; throat white with faint drab-gray streaks; chest drab-gray; remainder of under parts white. Male, wing, 79; tail, 62; culmen from base, 17; bill from nostril, 10; tarsus, 19. Female, wing, 78; tail, 65; culmen from base, 16; bill from nostril, 10; tarsus, 18.

"Quite rare in the localities collected in by us. A male measures, length, 149; wing, 80.5; tail, 60; culmen, 17.5; tarsus, 18.8; middle toe with claw, 16. A female, length, 159; wing, 82; tail, 62.7; tarsus, 18.5; middle toe with claw, 17.5; culmen, 22. Iris dark brown; legs, feet, and nails light slate; bill black." (Bourns and Worcester MS.)

590. HYLOTERPE WINCHELLI Bourns and Worcester.

WINCHELL'S THICKHEAD.

Hyloterpe winchelli Bourns and Worcester, Minnesota Acad. Nat. Sci. Occ. Papers (1894), 1, 21; Sharpe, Hand-List (1903), 4, 313; Grant, Ibis (1896), 549; Whitehead, Ibis (1899), 225; McGregor and Worcester, Hand-List (1906), 93. Hyloterpe major Bourns and Worcester, Minnesota Acad. Nat. Sci. Occ. Papers (1884), 1, 22.

Cebu (Bourns & Worcester, McGregor); Masbate (Bourns & Worcester, McGregor); Negros (Bourns & Worcester, Whitehead, Celestino); Panay (Bourns & Worcester); Sibuyan (Bourns & Worcester, McGregor); Tablas (Bourns & Worcester); Ticao (McGregor).

Adult.--Top of head vandyke-brown; back, rump, and edges of wing-feathers and of rectrices reddish brown (near mars-brown of Ridgway); auriculars slightly lighter; sides of neck and of breast similar to the back; under parts white; chest, flanks, and thighs washed with hair-brown. Iris brown or dark red; bill black; legs and nails pale blue or slate-gray. Length, about 170 mm. A male from Cebu measures: Wing, 94; tail, 74; culmen from base, 20; bill from nostril, 12; tarsus, 23. A male from Ticao, wing, 88; tail, 68; culmen from base, 17; bill from nostril, 11; tarsus, 20. A female from Sibuyan, wing, 86; tail, 68; culmen from base, 17; bill from nostril, 11; tarsus, 22.

"Quite common in the forests of the islands named. Rather a shy bird. Has a pleasant whistling note, and may be readily called up. Three males from Negros measure as follows: Wing, 82; tail, 69; culmen, 18.5; tarsus, 20.5; middle toe with claw, 19. Three females from Panay, wing, 81; tail, 66.5; culmen, 17.5; tarsus, 20.5; middle toe with claw, 18. Length measurement not taken in the flesh on any of the above. Two males from Masbate average 165 in length, and a female from same place measures 162. Bill black; iris brown; legs, feet, and nails light slate." (Bourns and Worcester MS.)

591. HYLOTERPE HOMEYERI Blasius.