436 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



This race of the sooty flycatcher is probably a mere straggler to our 

 provinces : it has been found only by Smith, who collected an adult 

 female at Doi Hua Mot, August 20, 1934. 



The adult has the entire upperparts brownish gray, the feathers of 

 the forehead and crown with indistinct blackish centers, the wings and 

 tail darker; the remiges margined with pale rufous-buff along the 

 inner web toward the base, the upper coverts and secondaries narrow- 

 ly tipped and margined along the outer web with white or buffy white ; 

 the lores and a narrow eye ring white; the underparts (including the 

 sides of the neck) white, indistinctly streaked with brownish gray on 

 the sides of the throat, across the breast, along the flanks, and on the 

 under tail coverts ; the under wing coverts and axillaries pale rufous- 

 buff (this color sometimes suffusing the breast and flanks). 



MUSCICAPA SIBIRICA CACABATA Penard 



Nepalese Sooty Flycatcher 



Muscicapa sibvrica cacabata Penard, Proc. New England Zool. Club, vol. 7, 1919, 



p. 22. New name for H[emichelidon] fuliginosa Hodgson, Proc. Zool. Soc. 



London, pt. 13, 1S45, p. 32 (Nepal), not [Muscicapa] fuliginosa Gmelin 1789, 



nor Musicapa fuliginosa Sparrman 1787. 

 Hemichelidon sibvrica subsp., Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1935, 



p. 66 (Doi Aug Ka) ; 1936, p. 118 (Doi Suthep). 



I have collected six specimens of the present form in the Thanon 

 Thong Chai range : An adult male and an adult female on Doi Ang 

 Ka, 5,000 feet, September 2 and 4, 1935; a pair of juveniles on Doi 

 Suthep, 5,200 and 5,300 feet, September 26, 1936 ; two juvenile males 

 on Doi Mae Lai, October 4, 1936. Its status in Thailand is uncertain. 



The examples from Doi Ang Ka were found perched on scattered 

 small trees growing in an extensive area of lalang; those from Doi 

 Suthep, in parklike pine-forest. 



An adult female had the irides brown ; the bill black, with the basal 

 half of the mandible fleshy horn; the interior of the mouth bright 

 yellow; the feet, toes, and claws brownish black. 



From M. s. sibirica, cacabata differs in its darker coloration through- 

 out (with much heavier streaking below and consequent reduction in 

 extent of the pure white areas), and also in its smaller dimensions 

 (the wing length ranging from 70 to 75 mm., against 75 to 83 mm.). 

 The juvenile of either race has the general color still deeper in tone 

 than the corresponding adult, the feathers of the upperparts with 

 white or buffy-white streaks and the wing feathers margined with pale 

 rufous-buff. 



Thai examples agree perfectly with summer-taken birds from Sze- 

 chwan and northwestern Yunnan, which have been named rothschildi, 



