434 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



In Siam it has been taken practically all over the country and down 

 the Peninsula to Patani. It has also been taken on many of the 

 islands off the coast. Robinson ^^ records it from Koh Samui, May 

 15, and Koh Pennan, May 30; and Langkawi, Terutau, and Butang *^; 

 Robinson and Kloss ^^ from Junkseylon ; Robinson ^^ from Koh Kut. 



PHYLLOSCOPUS NITIDUS PLUMBEITARSUS Swinhoe 



Phylloscopus pluinbeitarsus Swinhoe, Ibis, 1861, p. 330 (between Taku and 

 Peking, China). 



One male, Prae, April 26, 1930; one male, Sriracha, April 20, 1934; 

 one male, Pak Chong, April 10, 1929 ; one male, Muang Pai, December 

 27, 1932; two females, Chiengmai, November 25, 1928; one female, 

 Ban Nam Kien, Nan, April 20, 1930; two males, Mae Hong Sorn, 

 January 4, 9, 1933. 



Gyldenstolpe ^^ states that it is very common during winter in both 

 eastern and northern Siam ; and on his second expedition ^^ he secured 

 two males at Koh Lak, December 14 and 17; de Schauensee ^^ took 

 it at Chiengmai, December 22, January 26, 29; Tung Sio, January 27, 

 and Chantabun, March 24; Robinson and Kloss ^ doubtfully identify 

 specimens as of this form from Tapli, Pakchan, March 4-7, Tasan, 

 Chumporn, March 21, Koh Lak, April 3-8. 



The specimens taken by Dr. Smith agree with some from North 

 China and Manchuria. P. n. nitidus of the Caucasus is quite a 

 different-looking form, lighter, more yellowish green above and quite 

 yellow below. P. n. plumbeitarsus is grayish white below with only 

 faint yellowish streaks. P. n. viridanus of western Siberia, etc., of 

 which I have examined specimens only from Kashmir (not typical) 

 closely resembles P. n. plumbeitarsus , but the back has a grayish cast, 

 and the wing bar to the greater coverts is lacking entirely or very faint; 

 in the latter the greater wing bar is conspicuous, and generally the 

 lesser wing bar is present also, though faint. 



P. n. plumbeitarsus breeds in Transbaicalia and migrates south 

 through China to Indo-China, and Siam to winter. 



Stuart Baker ^' has named a form from Daban, southern Annam, 

 Acanthopneuste nitidus saturatus, which is said to breed in Man- 

 churia and winter in Annam, Yunnan, and the northern Shan States. 

 If this form is recognizable, the form wintering in Siam may belong 

 to it. I have not examined authentic specimens, however. 



M Journ. Federated Malay States Mus., vol. 5, p. 150, 1915. 

 '* Journ. Federated Malay States Mus., vol. 7, p. 183, 1917. 

 » Journ. Nat. Hist. Soc. Siam, vol. 3, p. 113, 1919. 

 w Ibis, 1915, p. 754. 



w Kungl. Svenska Vet.-Akad. Handl., vol. 50, no. 8, p. 29, 1913. 

 »8 Kungl. Svenska Vet.-Akad. Handl., vol. 56, no. 2, p. 45, 1916. 

 M Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 230, 1934. 

 •« Journ. Nat. Hist. Soc. Siam, vol. 5, p. 320, 1924. 

 •1 Bull. Brit. Orn. Club, vol. 44, p. 62, 1924. 



