296 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



Dissemurus p. rangoonensis has the frontal feathers lengthened, the 

 shorter ones in front directed forward, the longer ones behind arched 

 backward above the crown to make a conspicuous crest; the wirelike 

 shafts of the elongated outermost rectrices gradually spiralled and 

 terminated by a twisted racquet, much broader than that of Bhringa 

 remifer. It has the general coloration black, glossed almost every- 

 where with steel blue. 



Family ORIOLIDAE 



ORIOLUS CHINENSIS TENUIROSTRIS Blyth 



Assamese Black-naped Oriole 



0[riolus] tenuirostris Blyth, Journ. Asiat. Soc. Bengal, vol. 15, 1846, pp. 48^19 



("Central India," error; type locality here corrected to Assam). 

 Oriolus indicus [partim], Gyldenstolpe, Journ. Nat. Hist. Soc. Siam, 1915, p. 168 



(listed [=Khun Tan (partim)]). 

 Oriolus tenuirostris, Williamson, Journ. Nat. Hist. Soc. Siam, 1918, p. 21 (Doi 



Nga Chang). 

 Oriolus indicus indicus [partim], Gyldenstolpe, Ibis, 1920, p. 452 ("Throughout 



the whole country" [=Khun Tan (partim)]). 

 Oriolus indicus tenuirostris, Gyldenstolpe, Ibis, 1920, p. 452 (Doi Nga Chang). 

 Oriolus chinensis tenuirostris, de Schatjensee, Proc. Acad. Nat. Sci. Philadelphia, 



1929, p. 556 (Doi Suthep) ; 1934, p. 232 (Khun Tan, Doi Suthep, Doi Chiang 



Dao). — Chasen and Boden Kloss, Journ. Siam Soc. Nat. Hist. Suppl., 1932, 



p. 248 (Doi Suthep) .—Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 295 (Khun 



Tan, Doi Langka). 

 Oriolus chinensis tenuirostris [partim], Deignan, Journ. Siam Soc. Nat. Hist. 



Suppl., 1931, p. 150 (Doi Suthep [partim] ) ; 1936, p. 102 (Doi Suthep 



[partim] ) . 



The present race of the black-naped oriole is a rather common winter 

 visitor to the districts west of (and including) the Khun Tan range, 

 usually found between 3,000 and 5,500 feet but occasionally occurring 

 down to the very bases of the hills. On Doi Suthep the species has 

 been recorded from October 3 (1936) to the end of March (1932). 



This bird may be seen at the edge of clearings in the evergreen or 

 in the open hill-forest, often high in the trees but attracting attention 

 by its loud, clear whistles and its brilliant coloration. It is almost 

 always to be observed among the various forms drawn to flowering 

 and fruiting trees. 



An adult female had the irides crimson ; the bill and interior of the 

 mouth dusky pink ; the feet and toes slaty ; the claws dull black. 



The adult male has a black nuchal band continued on each side of 

 the head, through the eye, to the base of the bill ; the crown, the upper- 

 most back, and the entire underparts golden-yellow; the secondary 

 coverts, scapulars, back, rump, and upper tail coverts golden-olive; the 

 primary coverts black, tipped with yellow to form a conspicuous 

 spot near the center of the folded wing ; the primaries black, narrowly 



