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.)