THE BIRDS OF NORTHERN THAILAND 293 



must probably be known as D. h. barbatus (J. E. Gray). In default 

 of suitable comparative material I am unable to form an opinion. 



DICRURUS HOTTENTOTTUS BREVIROSTRIS (Cabanis and Heine) 



Chinese Hair-crested Drongo 



T[richometopus] brevirostris Cabanis and Heine, Museum Heineanum, pt. 1, 



1850 [=1851], p. 112 (China). 

 Chibia hottentotta brevirostris, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 



1929, p. 553 (Doi Suthep) ; 1934, p. 227 (Doi Chiang Dao ) .—Deign an, Journ. 



Siam Soc. Nat. Hist. Suppl., 1931, p. 148 (Doi Suthep) ; 1936, p. 101 (Doi 



Suthep).— Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 287 (Doi Langka). 



The Chinese hair-crested drongo occurs not uncommonly in winter 

 (October to January or later) on some of the higher hills of the 

 Thanon Thong Chai and Khun Tan ranges. On Doi Chiang Dao it 

 has been taken at 4,600 and 5,000 feet and on Doi Suthep at 5,500 feet, 

 but, on the latter mountain, it may descend as low as 3,500 feet, at 

 which elevation I have frequently observed a form of the species in 

 tall flowering trees during cold weather. 



At the summit of Doi Suthep, late in December and early in January, 

 flocks of this bird, together with numerous unrelated species, can 

 always be observed feeding and fluttering about among the blossoms 

 of a beautiful pink-flowered tree (Cassia sp.), which grows just below 

 the bungalows, on the eastern slope of the mountain. 



My specimens had the irides dark brown; the bill, feet, toes, and 

 claws black. 



From the resident subspecies this race is distinguishable only by 

 having the bill shorter and less robust and by having the long frontal 

 hairs finely barbed instead of naked. 



CHAPTIA AENEA AENEA (Vieillot) 



Indian Bronzed Drongo 



Dicrurus aeneus Vieillot, Nouveau dictionnaire d'histoire naturelle, nouv. 6d., 

 vol. 9, 1817, p. 586 (Bengal; type locality restricted to Dacca, eastern Ben- 

 gal, by Stuart Baker, Nov. Zool., vol. 25, 1918, p. 304). 



Chaptia aenea, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1913, p. 28 

 (Ban Huai Horn) ; 1916, p. 19 (Pang Hua Phong, Khun Tan, Doi Pha 

 Sakaeng) ; Journ. Nat. Hist. Soc. Siam, 1915, p. 167 (listed). 



Chaptia aenea malayensis, Gyldenstolpe, Ibis, 1920, p. 450 ("Northern Siam"). 

 — Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1936, p. 101 (Doi Suthep). 



Chaptia aenea aenea, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 1929, 

 p. 552 (Doi Suthep, Chiang Saen) ; 1934, p. 226 (Doi Suthep, Doi Chiang 

 Dao). — Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1931, p. 147 (Doi 

 Suthep).— Green way, Bull. Mus. Comp. Zool., 1940, p. 187 (Doi Ang Ka, 

 Doi Nang Kaeo). 



Chaptia aenea> malayensis, Chasen and Boden Kloss, Journ. Siam Soc. Nat. 

 Hist. Suppl., 1932, p. 247 (Doi Suthep). 



