BIRDS FROM SIAM AND THE MALAY PENINSULA 457 



Niltava williaminae de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, vol. 81, 

 p. 469, 1929 (Doi Sutep, Siam). 



One female (type), Doi Sutep, December 15, 1928; two males and 

 two females, Khun Tan, 4,000 feet, Februarj^ 16 and 24, 1932. 



Because this form v/as placed in the genus Cyornis by recent authors, 

 where it does not belong, I was led into describing the first specimen 

 forwarded by Dr. Smith as new and later caused de Schauensee to 

 commit the same error. 



Compared with N. v. vivida, of Formosa, the male of the present 

 form is a duller blue above and on the throat and is somewhat larger. 



Niltava davidi dairidi and A'', d. lychnis, of China, are also very closely 

 related to A^. vivida, but these two races have a brighter and lighter 

 blue neck patch and apparently a differently colored female; other^ 

 wdse they would go in one form group. 



The range of N. v. oatesi is Assam south of the Bramaputra, Shan 

 States of Burma, south to Tenasserim, Siam, and Tonkin. De 

 Schauensee ^' secured a good series on his third expedition at Doi 

 Sutep and Chiengdao and reached the same conclusion that I had 

 reached after publishing my last note on this bird. 



A closely related form, N. v. sumatrana Salvadori, is found in the 

 mountains of the Malay States and Sumatra. Possibly it may extend 

 into Patani. 



NILTAVA MACGRIGORIAE (Burton) 



Phoenicura macgrigoriae Burton, Proc. Zool. Soc. London, 1835, p. 152 (Hima- 

 layas) . 



One immature male and one adult female, Doi Hua Mot, August 

 17, 22, 1934. 



The immature male is in the spotted plumage. It resembles the 

 adult female but lacks the specialized blue feathers on the side of the 

 neck. The upperparts are spotted with russet and dusky; the lower 

 parts are lightly flammulated with fulvous and sepia; the forehead 

 and chin are lighter than in the female. It was without doubt raised 

 in the vicinity and was taken August 22. 



De Schauensee " took an immature maie on Doi Sutep, 4,500 feet, 

 July 18, and Deignan ^^ secured a male on Doi Angka, 4,400 feet, 

 April G, 1931. These four birds comprise the sole records for Siam at 

 the present tune. 



The species breeds in the Himalayas from Mussoorie to eastern 

 Assam, Burma, Tenasserim, northern Siam, Tonkin, and northern 

 Ann am. 



" Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 218, 1934. 

 " Proc. Acad. Nat. Sci. Philadelphia, vol. 8fi, p. 219, 1934. 

 " Rodgers and Deignan, Proc. Biol. Soc. Washington, vol. 47, p. 91, 1934. 



