THE BIRDS OF NORTHERN THAILAND 537 



completion of what must be the postnuptial molt; two females of 

 February 5 are presumably in prenuptial molt ; a male of March 18 is 

 nearing completion of molt into first-nuptial dress. I find no evidence 

 for the existence of an eclipse plumage, although such may exist : speci- 

 mens in female dress are much less likely to be collected than full- 

 colored males. 



The male has the forehead, crown, and center of the nape, the poste- 

 rior ear coverts, the chin, center of the throat, and an isolated patch at 

 each side of the upper breast metallic blue (more or less strongly 

 glossed with violet) ; the supercilium, sides of the head, throat, and 

 neck, the back, scapulars, and lesser wing coverts deep crimson; the 

 rump golden-yellow (sometimes partly concealed by long yellowish- 

 gray feathers growing from the sides of the lower back) , the posterior 

 feathers tipped with black (or black and red) to form a narrow band; 

 the upper tail coverts and basal two-thirds of the greatly elongated 

 central pair of rectrices metallic blue, their apical third and the re- 

 maining rectrices black (some narrowly edged with metallic blue), 

 all but the central pair with outwardly increasingly broad ashy tips; 

 the remiges blackish, outwardly edged with ruf escent olive-green ; the 

 breast and upper abdomen scarlet-crimson, this color paling poste- 

 riorly and changing through bright yellow to greenish yellow on the 

 remaining underparts. The female is inseparable in the field from 

 that of sanguinipectus ; direct comparison in the hand will show that 

 dabryii has the light tips of the rectrices bolder and whiter. 



AEthopyga gouldiae harrietae Delacour and Greenway, with type 

 from Laos but based in part upon material from Doi Ang Ka, seems to 

 me inseparable from a topotype of dabryii. I suspect that the richness 

 of the reds and the purity of the metallic blue vary directly with the 

 f reshness of the feathers in question. 



AETHOPYGA NIPALENSIS ANGKANENSIS Riley 



Doi Ang Ka Green-throated Sunbird 



AEthopyga nipalensis angkanensis Riley, Proc. Biol. Soc. Washington, vol. 42, 



1929, pp. 162-163 (Doi Ang Ka, North Thailand). 

 AEthopyga nipalensis angkanensis, Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 500 



(Doi Ang Ka).— Greenway, Bull. Mus. Comp. Zool., 1940, p. 192 (Doi Ang 



Ka). 



This beautiful sunbird, known only from the top of the highest peak 

 of Doi Ang Ka, was discovered by Smith, who took a pair at 8,400 

 feet, December 5, 1928, and a second male the following day at 8,000 

 feet. In April, 1931, I found it decidedly uncommon at 8,400 feet 

 and, in September, 1935, failed to see it at all. Its home was next 

 visited by members of the Asiatic Primate Expedition, who on the 



