572. Cyornis oatesi.
The Rufous-bellied Blue Flycatcher.
Cyornis vivida, Swinh. apud Hume & Dav. S. F. vi, p. 229 ; Hume, Cat. no. 309 bis; id. S. F. xi, p. 111. Niltava vivida (Swinh.), apud Sharpe, Cat. B. M. iv, p. 463 (part.) ; Oates, B. B. i. p. 200. Niltava oatesi, Salvadori, Ann. Mus. Civ. Gen. (2) v, pp. 514 (1887), 578 (1888).
Coloration. Male. Forehead and lores deep black ; crown, nape, rump, upper tail-coverts, lesser and median wing-coverts shining cobalt-blue : back and scapulars dark bluish black ; winglet and primary-coverts black ; greater coverts and quills black, edged with blue; tail black, the outer webs suffused with cobalt-blue ; region of eye and ear-coverts black, the latter bordered posteriorly by a band of cobalt-blue running up to the nape ; chin and throat black suffused with blue; remainder of lower plumage, axillaries, and under wing-coverts chestnut.
Female. Forehead, lores, round the eye, cheeks, chin, and upper throat rufous, speckled and irregularly barred with brown; under tail-coverts and a large patch on the throat, the axillaries, and under wing-coverts clear yellowish buff; remainder of lower plumage ashy olive suffused with buff; crown, nape, and sides of neck ashy brown; remainder of upper plumage olive-brown with a fulvous tinge; tail brown, suffused with rufous on the outer webs.
Legs, feet, and claws dark to blackish brown ; soles yellowish ; bill black; iris deep brown to reddish chocolate (Hume).
Length about 7.5; tarsus .7 to .8; bill from gape about .8. Males from Tenasserim have wings varying from 3-7 to 4, tails 3 to 3.7; males from Manipur have wings varying from 3.9 to 4, tails 3.1 to 3.3. In the females the wing is 3.7, and the tail 2.8 to 3.2.
G. vividus from China differs from the present species in being much smaller, the wing in males varying from 3.3 to 3.5 and tail 2.6 to 2.8 ; in females the wing is 3.3 and the tail 2.5. The male has the upper parts of a much more brilliant blue. The female differs merely in size.
I have examined the type of G. oatesi, and find it the same bird as the one which Hume identified with doubt with C. vividus, and of which there are numerous specimens in the Hume collection from Manipur and Tenasserim.
There is a female specimen of a Cyornis in the Hume collection from Tenasserim, which I cannot identify with any known species. It differs from the females of C. oatesi and C. vividus, among other things, in wanting the conspicuous yellowish-buff patch on the throat. It is probably the female of an undescribed species, and it appears to be the same as a specimen noticed by Count Salvadori (Ann. Mus. Civ. Gen. (2) vii. p. 385,1889) under the generic name of Niltava. Mr. Fea procured this specimen in Karennee, and Count Salvadori, with his usual courtesy, forwarded it to me for examination. Being a female specimen, and, as such, difficult to deal with till the male is known, the Count has prudently refrained from naming it*.
Distribution. Muleyit mountain in Tenasserim ; Manipur.