■470 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



C. c. antioxantha apparently is restricted to the Malay Peninsula 

 from southern Tenasserim through Peninsular Siam to the Malay 

 States. This form is close to calochrysea and may not be recognized 

 as distinct by some authors, but for those who wish to unite the two 

 forms I would call attention to the page precedence of the latter over 

 the former name. 



EUMYIAS THALASSINA THALASSINA (Swalnson) 



Muscicapa thalassina Swainson, in Jardine's Naturalist's Library, ed. 1, vol. 10, 

 Flycatchers, p. 252, 1838 (India). 



One female, Khun Tan Mountains, 4,000 feet, November 23, 1928; 



two females, Khun Tan, 3,000 feet, October 23, 1929, and February 



16, 1932; three males, Doi Nangka, November 17-20, 1930; one male 



•and one female, Bangkok, January 30, 31, 1925; one male, Hin Lap, 



-December 10, 1931. 



The range of this form is from the high mountains of western China 

 to northern India, Burma, Tenasserim, Siam, as far in the southwest 

 as Koh Lake and Nong Kae, eastward to French Laos, Tonkin, 

 Annam, Cochinchina, and Cambodia. 



Deignan ® states that it occurs on Doi Sutep at 3,500-5,500 feet, 

 ;and in small numbers on the plain in winter; it seems to be a common 

 bird all over northern Siam and evidently breeds in the mountains. 

 -Away from the mountains it occurs only in the winter season, but it 

 has been recorded from practically all parts of Siam proper. 



Family MOTACILLIDAE: Wagtails, Pipits 



MOTACILLA ALBA OCULARIS Swinhoe 



Motacilla ocularis Swinhoe, Ibis, 1860, p. 55 (Amoy, Fohkien, China). 



One male, Chiengmai, November 24, 1928; one male and one 

 female, Lampang, November 15, 1928; one male, Nongkae, February 

 18, 1929. 



This form has a light-gray back and a black ocular streak. 



The form breeds in northeastern Siberia and migrates through 

 eastern Cliina to wdnter in southern China, Indo-China, Burma, 

 eastern Bengal, Siam, Formosa, and the Philippine Islands. 



De Schauensee ^ took a male at Chiengmai, January 5. Dr. Smith 

 wrote abundant on the label of the Lampang male. Deignan ^ says 

 that it is probably common in winter at Chiengmai from November 

 2 to February 16. 



MOTACILLA ALBA BAICALENSIS Swinhoe 



Motacilla baicalensis Swinhoe, Proc. Zool. Soc. London, 1871, p. 303 (eastern 



Asia). 



One female, Lampang, November 15, 1928. 



» Journ. Siam Soc. Nat. Hist. Suppl., vol. 8. p. 144, 1931. 

 • Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 238, 1934. 

 ' Journ. Siam Soc. Nat. Hist. Suppl., vol. 10, p. 120, 1938. 



