418 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



Szechwan are inhabited by ruflatus. T. c. albocoeruleus, the white- 

 browed race of Kansu, seems not to occur, even in winter, south of 

 northern Szechwan. 



TARSIGER CYANURUS USSURIENSIS Stegmann 

 / 



Japanese Orange-flanked Bushrobin 



Tarsig&r cyanurus ussuriensis "Sushk. (in litt.)" Stegmann, Ezhegodnik Zoologi- 



cheskogo Muzeia, Akadeiniia Nauk SSSR [Ann. Musee Zool. Acad. Sci. 



U. R. S. S.], vol. 29 [for] 1928, 1929, p. 229 (Ussuri-land and Manchuria). 

 Ianthia cyanura cyanura, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 



1929, p. 543 (Doi Suthep). — Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1931, p. 142 (Doi Suthep).— Riley, U. S. Nat Mus. Bull. 172, 1938, p. 404 



(Doi AngKa). 

 Ianthia cyanura, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1936, p. 112 (Doi 



Suthep). 

 Tarsiger cyanurus cyanurus, Gkeenway, Bull. Mus. Comp. Zool., 1940, p. 179 (Doi 



Ang Ka). 



Like the preceding form, the Japanese orange-flanked bushrobin 

 is known from Thailand by only four examples : De Schauensee took 

 an adult male (observed in company with a female several times be- 

 tween December 7 and 12) on Doi Suthep, 5,500 feet, December 12, 

 1928; Smith collected an adult female on Doi Ang Ka, 8,000 feet, 

 December 5, 1928, and an adult male the following day at 8,400 feet; 

 the members of the Asiatic Primate Expedition shot a female at the 

 summit of Doi Ang Ka, March 30, 1937. 



The old male differs from that of ruflatus chiefly in having the 

 upperparts cerulean blue, the feathers of the mantle often narrowly 

 tipped with olivaceous-brown ; that portion of the supercilium between 

 the base of the bill and the eye white (sometimes washed with pale 

 blue) ; the white streak down the center of the throat broader and 

 more flaring on the upper breast; the white portions of the under- 

 pays often more or less strongly suffused with buff. The adult female 

 differs from that of ruflatus in having the white streak down the 

 center of the throat broader and more flaring on the breast; the 

 olivaceous-brown portions of the underparts usually strongly tinged 

 with buff. v 



According to Stegmann (loc. cit.), the adult male of cyanurus is 

 customarily colored like the female — only in rare instances assuming 

 a blue plumage ; that of ussuriensis is "always" blue. The two males 

 taken in Thailand have both been blue and it may be assumed that of 

 the two only ussuriensis occurs with us. 



MYIOMELA LEUCURA LEUCURA (Hodgson) 



Indian White-tailed Groundrobin 



M[uscisylvia] leucura Hodgson, Proc. Zool. Soc. London, pt. 13, 1845, p. 27 

 (Nepal). 



