THE BIRDS OF NORTHERN THAILAND 195 



Pyrotrogon erythrocephalus erythrocephalus [partim], Gyldenstolpe, Ibis, 1920, 

 p. 606 ("Northern Siam" [partim]). 



A red-headed trogon, which may for the present be placed with this 

 form, is of rare occurrence in the lowland evergreen forests of the 

 more eastern provinces. Gyldenstolpe saw three examples near the 

 Mae Raem and collected one of them, a female, March 11, 1912. 



H. e. annamensis was described after comparison with Malayan 

 birds, believed by the authors to represent erythrocephalus but subse- 

 quently (and quite properly) separated by Riley as chaseni. From 

 true erythrocephalus, annamensis differs only in having the upper 

 wing coverts distinctly banded, rather than vermiculated, and the 

 black element present in much greater proportion. 



The birds dwelling east of the Khun Tan range are neither er-ythro- 

 cephalus nor annamensis but represent an intermediate population, 

 which will probably be given subspecific status in the future. It is 

 interesting to find that males from Doi Khun Tan belong with erythro- 

 cephalus while females from the same mountain agree with examples 

 from farther east. 



HARPACTES ORESKIOS STELLAE Deignan 



Stella's Orange-breasted Trogon 



Harpactes oreskios stellae Deignan, Auk, vol. 58, 1941, pp. 396-397 (Muang 



Chiang Dao, North Thailand). 

 Harpactes oreskios, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1913, p. 57 



(Ban Huai Horn) ; Journ. Nat. Hist. Soc. Siam, 1915, p. 232 (listed). 

 Pyrotrogon oreskios, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1916, 



p. 105 (Khun Tan, Pha Hing, Pha Kho). 

 Pyrotrogon weskios uniformis, Gyldenstolpe, Ibis, 1920, p. 606 ("Throughout 



Siam"). — de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 1929, p. 575 



(Doi Suthep). 

 Earpactes oreskios uniformis, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1931, 



p. 163 (Doi Suthep) ; 1936, p. 92 (Doi Suthep).— de Schauensee, Proc. Acad. 



Nat. Sci. Philadelphia, 1934, p. 265 (Doi Suthep).— Riley, U. S. Nat. Mus. 



Bull. 172, 1938, p. 167 (Chiang Dao, Khun Tan). 



The orange-breasted trogon occurs rather commonly throughout our 

 provinces, inhabiting the evergreen and mixed-deciduous forest from 

 the plains to about 5,500 feet (but seldom found above 3,500 feet). 



Its habits are much like those of the red-headed species, and, like 

 its congener, it usually perches with its back turned toward a source 

 of potential danger, so that it is often overlooked, although near at 

 hand, until it flies a short distance with a sudden burst of color. Gyl- 

 denstolpe observes (1916) that "it has a smacking note which is fairly 

 loud and may be heard some distance." 



The same author found the species breeding near Pha Kho, March 

 11, 1914 : two eggs had been laid in an open hole of a decayed tree, in 



