BIRDS FROM SIAM AND THE MALAY PENINSULA 405 



China, Tonkin, northern Annam, Laos, northern Siain, and Cachar, 

 India (one record) to spend the winter. 



In Siam it is not a common winter resident apparently, as the 

 only previous record known to me is one by de Schauensee ^° of a 

 single male shot on Doi Sutep, 5,500 feet, December 12, one of a 

 pair; this same record was afterward given by Deign an. ''^ 



MUSCISYLVIA LEUCURA Hodgson 



Muscisylvia leucura Hodgson, Proc. Zool. Soc. London, 1S45, p. 27 (Nepal). 



Two males and one female, Doi Nangka, November 12, 1930, April 

 22, 27, 1931; one male. Pang Meton (Doi Nangka), May 6, 1931; 

 one male. Ban Padieng, December 22, 1932. 



De Schauensee " took a male at Cliiengsen in January, and on his 

 third expedition ^^ he secured a female at Khun Tan, January 3 ; 

 Deignan '^ took a female on Doi Sutep, 3,200 feet, in February, and 

 later "^ an immature on Doi Angka, 4,600 feet, September 2, 1935. 

 It has been found on Gunong Ijau, Perak, at about 4,000 to 4,700 

 feet, and this is the only place in the Malay Peninsula where it has 

 been obtained. Robinson remarks that the female is darker and 

 may represent a different race.^^ 



The United States National Museum possesses a pair from the 

 Langbian Peaks region of southern Annam. The female when com- 

 pared with the Siamese female is much more russet above and a 

 deeper tawny-olive on the chest; among other differences the belly of 

 the Siam bird is smoke gray while that of the one from Annam is 

 Isabella color. Two females could hardly look more different. The 

 male from Annam is not so different but is a little lighter blue above. 

 I doubt very much if the Annam and Siam specimens belong to the 

 same form. 



This does not seem to be a common bird in Siam, where at present 

 it has been recorded only from the mountains in the north. 



The male taken at Pang Meton, May 6, is in its second year and is 

 molting from the brown into the blue plumage. It has almost fully 

 acquired the latter, only a few old brov/n feathers remaining in the 

 scapulars and the greater wing coverts; the new blue plumage is con- 

 siderably lighter than in the adult and would require at least one 

 more molt to attain fully adult condition. 



The range of the form is from Simla through Nepal and Sikkim to 

 eastern Assam, Burma, Yunnan, western Szechwan, northern Siam, 

 Laos, and Tonkin; doubtfully in the mountains of Perak, Malay 

 States. 



'• Proc. Acad. Nat. Rci. Philadelphia, vol. 81, p. 543, 1930. 

 " Journ. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 142, 1931. 

 " Proc. Acud. Nat. Sci. Philadelpliia, vol. 81, p. 513, H)30. 

 " Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 210, 1934. 

 " Journ. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 142, 1931. 

 " Journ. Siam. Soc. Nat. Hist. Suppl., vol. 10, p. 65, 1935. 

 « The birds of the Malay Peninsula, vol. 2, p. 226, 1928. 



