BIEDS FROM SIAM AND THE MALAY PENINSULA 297 



Dr. W. L. Abbott collected one immature male, Lay Song Hong, 

 Trang, December 29, 1896; one male, Trang, February 4, 1897; one 

 male, Endau River, eastern coast of Johore, June 28, 1901 ; and one 

 male and one female, Rumpin River, Pahang, June 29, 30, 1902. He 

 gives the soft parts of the adult males as: Iris red; bill pale fleshy 

 brown or orange fleshy; feet dark. In the immature male they are 

 given as: Iris pink; bill reddish brown; feet leaden. 



The immature male collected by Dr. Abbott at Lay Song Hong, 

 Trang, December 29, is in a plumage hardly differing from the female. 

 It is brighter and less yellowish green above ; the pileum duslder, the 

 streaks below somewhat narrower, and the bill shorter. It may be 

 incorrectly sexed, but if not it would seem to be a rather late date 

 for this plumage. 



The form ranges from Java and Sumatra to the Malay States and 

 north through Peninsular Siam to southern Tenasserim. 



Robinson and Kloss *^ record it from Tasan. This is as far north 

 in Peninsular Siam as I have seen any records. Apparently it is not 

 a common bird in the northern part of the Peninsula, and possibly 

 it is often overlooked on account of habits. Dr. Abbott has a note 

 on one of his specimens that it was shot in heavy forest. This ob- 

 servation is confirmed by Robinson. ^^ A number of closely related 

 forms have been nam.ed from islands off the western coast of Sumatra, 

 Borneo, and the Philippines. 



ORIOLUS TRAILII TRAIUI (Vigors) 



Pastor traillii Vigors, Proc. Zool. Soc. London, 1832, p. 175 (Himalayas). 



One adult female, Doi Angka, 7,500 feet, December 6, 1928; one 

 immature male, Doi Nangka, November 19, 1932; two adult males 

 and one adult female, Pang Meton (Doi Nangka), April 29 and May 

 4, 1931 ; one subadult male, Doi Sutep, February 3, 1932 ; one immature 

 male, Khun Tan Mountains, 3,000 feet, May 12, 1933. Dr. Smith 

 records the color of the soft parts in a female as: Iris pale j^ellow; bill 

 and feet pale blue ; soles yellow. 



The three immature males are in three stages of plumage. The 

 youngest resembles the female, but the back has a brownish tinge and 

 some of the feathers of the mantle and middle wing coverts have 

 slight fulvous tips; below it is lighter and the blackish streaks are 

 narrower; it was taken May 12. The next stage is much darker above 

 and below, and there is a slight tinge of maroon on the back. It was 

 taken November 19. In the third stage the back is maroon as in the 

 adult, but darker, caused by some of the feathers still having narrow 

 blackish margins and the white subterminal spot appearing only on 

 the upper back and reduced in area. The lower parts are still streaked 



«' Journ. Nat. Hist. Soc. Siam, vol. 6, p. 351, 1924. 



" The birds of the Malay Peninsula, vol. 1, p. 272, 1927. 



