LANGHORNE'S IMPERIAL PIGEON.

Muscadivora langhornei Mearns, Proc. Biol. Soc. Wash. (1905),

18, 84; McGregor and Worcester, Hand-List (1906), 11.

East Bolod (Mearns); West Bolod (Mearns).

"This large fruit pigeon is closely related to Muscadivora pickeringi

(Cassin) from Mangsee Island north of Borneo, on the west side of

the Sulu Sea, of which the type (No. 15732) is in United States

National Museum. The size is practically the same; but the colors

differ as follows: General coloration paler; the vinous-gray of the

head and under parts is darker, the gray of lower hind neck extends

farther down on the mantle, the white around the base of the bill and

surrounding the eye is more extensive, the back and rump are paler and

less brownish gray, the wings are paler, grayer and less greenish,

and the under tail-coverts less reddish. Iris purplish red; region

of the nostrils dark plumbeous; bill light plumbeous; naked eyelid

deep vinaceous; bare space around eye plumbeous; feet vinaceous,

flesh-color on under side of toes; claws plumbeous. Three adult males:

Length, 456, 456, 460; alar expanse, 770, 760, 770; wing, 242, 242,

243; tail, 180, 180, 178; culmen, 19, 21, 19; tarsus, 30, 31, 32;

middle toe with claw, 48, 49, 45." (Mearns.)

Genus PTILOCOLPA Bonaparte, 1854.

Sexes unlike in plumage; bill and gape rather small compared with

Muscadivores; nostril opening elongate; first primary attenuated

and scooped on inner web; second primary slightly scooped; inner

primaries obliquely cut at tip; the outline sinuous and outer web

extending beyond shaft and inner web; tarsus partly feathered.

Species.

a1. Chin, throat, and upper part of chest gray or black.

b1. Band on fore breast light slate-gray. ... carola (p. 46)

b2. Band on fore breast black. ... nigrorum (p. 47)

a2. Chin, throat, and upper part of chest nearly pure

white. ... mindanensis (p. 47)

A Manual of Philippine Birds · 第 82 / 1543 题