LUZON BLACK THRUSH.
- Merula thomassoni Seebohm, Bull. Brit. Orn. Club (1894), 3, 41; Grant, Ibis (1894), 508; (1895), 445; Sharpe, Hand-List (1903), 4, 120; McGregor and Worcester, Hand-List (1906), 83.
- Turdus thomassoni Whitehead, Ibis (1899), 212.
Bul-it, Benguet.
Luzon (Whitehead, McGregor, Mearns).
Adult.—Entire head, neck all round, chin, throat, and chest light smoky brown, darker on forehead and crown; remainder of plumage black; some of the feathers at sides of abdomen tipped with white; under tail-coverts with white shaft-streaks and narrow rusty brown tips. Bill, legs, and nails yellow. Length of a male, plumage somewhat worn, 240; wing, 116; tail, 92; culmen from base, 22; bill from nostril, 14; tarsus, 31. A female, wing, 118; tail, 93; culmen from base, 24; bill from nostril, 15; tarsus, 33. Even in adult birds there is some variation in the amount of white on the under tail-coverts, and rusty brown fringes on the feathers of the abdomen seem to indicate immaturity. A young male has the head and neck black instead of chocolate-brown and the feathers of lower breast and abdomen are liberally marked with rusty brown, this coloring the shafts of some feathers.
526. PLANESTICUS MAYONENSIS (Mearns).
MAYON BLACK THRUSH.
- Merula mayonensis Mearns, Phil. Jour. Sci. (1907), 2, sec. A, 358.
Luzon (Mearns).
“Characters.—Pattern of coloration similar to that of Merula thomassoni Grant, but darker, with less contrast between the coloration of the head and that of the body. Smaller, with relatively stouter bill; preanal feathers not tipped with white.