THE BIRDS OF NORTHERN THAILAND 417 



white mustachial streak ; the chin and throat buffy white, more or less 

 washed with rufous below, this area edged at the sides by a narrow 

 black line and below by a band of mixed black and blue, which, in turn, 

 is followed by a narrow and poorly defined rufous band. As seen in 

 Thailand, the adult male has the blue of the chin and upper throat and 

 the rufous of the lower throat and upper breast more or less completely 

 replaced by white. A juvenile female from Chiang Mai (January 30) 

 differs from the adult in the complete absence of blue and rufous below 

 and in having the breast feathers blackish brown with white edgings 

 to form a broad speckled gorget. 



Thai males, differing from robusta in rather shorter wing length 

 (70 to 75 mm.) and decidedly shorter wing tip, agree perfectly with a 

 series of Chihli specimens taken late in May and early in September. 



TARSIGER CYANURUS RUFILATUS (Hodgson) 



Nepalese Orange-flanked Bushrobin 



Nlcmura] rufllatvs Hodgson, Proc. Zool. Soc. London, 1845, pt. 13, p. 27 (Nepal). 

 lanthia rufilata rufilata, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1936, p. 112 



(Doi Suthep). 

 Tarsiper cyanurus rufilatus, Greenway, Bull. Mus. Comp. Zool., 1940, p. 180 



(Doi Ang Ka). 



The present race of the orange-flanked bushrobin is known from 

 Thailand by only four specimens : a female taken by me on Doi Suthep, 

 4,500 feet, February 8, 1936, and a juvenile male and two females col- 

 lected by the Asiatic Primate Expedition at the summit of Doi Ang 

 Ka, March 23 and 28, 1937. 



My example was found alone at a clearing, just where the evergreen 

 gave way to pine, flitting about the vine-tangled branches of a fallen 

 tree. 



The full-plumaged male has the forehead, supercilium, shoulder 

 area, rump, and upper tail coverts shining bright blue ; the upperparts 

 otherwise deep cobalt blue or ultramarine ; the sides of the head, neck, 

 throat, and breast deep cobalt blue (sometimes almost blackish blue 

 at the sides of the breast) ; the chin and center of the throat pure white ; 

 the sides of the body golden-orange; the remaining underparts white, 

 sullied with gray (most strongly on the breast and upper abdomen). 

 The adult female has the crown and mantle olivaceous-brown, chang- 

 ing to olivaceous gray-blue on the rump and upper tail coverts; the 

 tail dull blue ; the chin and center of the throat white ; the sides of the 

 body golden-orange ; the remaining underparts pale olivaceous-brown, 

 changing to sullied white on the center of the lower abdomen and the 

 under tail coverts. 



T. c. practicus, described from southeastern Yunnan, apparently 

 ranges as far north as Shensi, but northwestern Yunnan and southern 



