BIRDS FROM SIAM AND THE MALAY PENINSULA 431 



quite differently shaped. The wing is shorter. P. aedon also closely 

 resembles Horornis canturians but has not the light superciliary, the 

 first primary shorter (about 21 mm); third and fourth primaries are 

 nearly equal and longest instead of the fourth and fifth; and the feet 

 are dusky (skin) instead of light brownish, probably flesh color in life. 



HERBIVOCULA SCHWARZI (Radde) 



Sylvia schwarzi Radde, Reisen im Siiden von Ost-Siberien, Vogel, p. 260, pi. 9, 

 1863 (Tarei Nor). 



One male, Chiengmai (Doi Sutep), December 13, 1928; two females, 

 Lampang, November 17, 1928; one male, Doi Nangka, November 16, 

 1930. 



The only two specimens available for comparison are a male, from 

 Tientsin, China, May 21, and a male from North Kirin, Manchuria, 

 September 4. Both specimens are primrose yellow on the breast, the 

 chest, flanks, and under tad coverts cinnamon-buff; the throat white. 

 The Doi Sutep male has the breast wliite and the buff on the flanks, 

 chest, and under tail coverts is much lighter; the upperparts also are 

 much lighter. 



The two females from Lampang are similar in color to the males 

 from China and Manchuria but are somewhat smaller and the throats 

 are creamy buff. The male from Doi Nangka has the yellow on the 

 breast very light; the lowerparts are mostly creamy buff. 



The w^ng in the male from Manchuria measures 64.5 mm; that of 

 the male from Tientsin 65 ; the male from Chiengmai 63 ; the male from 

 Doi Nangka 56. Two females from Lampang have wing measure- 

 ments of 54 and 56 mm. 



Unfortunately I am unacquainted with the plumages of this species. 

 The yellow-breasted specimens are probably birds of the year. 



In plumage the yellow-breasted birds closely resemble Oreojmeuste 

 armandi, but the bill is heavier and the superciliary is more of a cinna- 

 mon-buff and more conspicuous. 



The species breeds in eastern Siberia from Lake Baical to Sachalin 

 Island and migrates south to winter in southern China, Indo-Cliina, 

 northern Siam, Tcnasserim, and Pegu. 



De Schauensce " took a male at Merim, January 18, and on his third 

 expedition a small series at Nakon Nayok, November 21; Chiengmai, 

 December, Januar}^, and February 1; Sriracha, February 7; Bua Yai, 

 January 1 1 and Chiengdao, January 17. He says this bird was usually 

 found in lowland scrub on Doi Sutep as high as 2,500 feet and on 

 Chiengdao at 4,600 feet.^" 



Deignan ^^ says it is not an uncommon winter visitor in the Chieng- 

 mai region from December 23 to April 2. 



" Proc. Acad. Nat. Sci. Pliiladelphia, vol. 81, p. 555, 1930. 

 '< Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 229, 1934. 

 « Journ. Siam Soc. Nat. Hist. Suppl., vol. 10, p. 116, 1936. 



