BIRDS FROM SIAM AND THE MALAY PENINSULA 363 



differing from aeralatus in the absence of the black edges to the 

 innermost remiges and the reduction of the white tips to the primaries. 

 P. a. cameranoi occurs in Sumatra. 



P. a. aeralatus ranges from eastern Burma south tlirough northern 

 Siam and Tenasserim to the Federated Malay States; eastward it 

 extends to Cambodia, eastern Tonkin, northern Laos, and northern 

 Annam. 



In Peninsular Siam apparently it occurs only on mountains of 

 sufficient elevation. Beside the localities where it was taken by Dr. 

 Abbott and Dr. Smith, Robinson ^ reports it from Kao Nawng, above 

 2,000 feet, Bandon; in northern Siam, Deignan * reports that on Doi 

 Sutep it is found from 3,500 to 5,500 feet. It has also been taken on 

 Doi Nga Chang and at Chiengdao and probably occurs on all the 

 mountains in the north. Though I have seen no records from eastern 

 Siam, it probably occurs there. 



PTERUTHIUS AENOBARBUS INTERMEDIUS (Hume) 



Allotrius intermedius Hume, Stray Feathers, vol. 5, p. 112, 1877 (central Tenas- 

 serim Hills). 



One male, IQiun Tan, October 20, 1929; one male, Doi Nangka, 

 November 12, 1930; two males and three females, Doi Hua Mot, 

 August 19-26, 1934. 



Deignan ^ found it once on Doi Sutep, 5,300 feet. De Schauensee ' 

 states that it is not a common bird in northern Siam. 



This form occurs from the eastern hills of Burma and Tenasserim 

 through the mountains of northern Siam to Laos and Tonkin. P. a. 

 laotianus has been described from Xieng-Khouang, Laos; P. a. 

 indochinensis from Djiring, southern Annam; and P. a. aenobarbus 

 from Java. 



MESIA ARGENTAURIS GALBANA Mayr and Greenway 



Mesia argentauris galhana Mayr and Greenway, Proc. New England Zool. 

 Club, vol. 17, p. 3, 1938 (Doi Angka, Siam). 



One female, Doi Angka, 4,000 feet, December 4, 1928; one male 

 and one female, Doi Nangka, April 24, 1931; three males and two 

 females, Pang Meton (Doi Nangka), May 1-4, 1931. 



It has been recorded from Doi Sutep by de Schauensee,^ Deignan,' 

 and Chasen and Kloss.^ Deignan says it occurs between 5,000 and 

 5,500 feet. 



The form ranges from the Southern Shan States to northern Siam. 



• Journ. Federated Malay States Mus., vol. 5, p. 107, 1915, 

 « Journ. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 138. 1931. 

 •Journ. Slam Soc. Nat. Hist. Suppl., vol. 8, p. 175, 1931. 



• Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 197. 1934. 



' Proc. Acad. Nat. Sci. Philadelphia, vol. 81, p. 53(3. 1930; vol. 86, p. 197, 1934. 

 ' Journ. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 139, 1931. 



• Journ. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 246, 1932. 



