416 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



difficulties. The male of philippensis has the breast, belly, and under 

 wing coverts rufous. 



Dr. W. L. Abbott took an adult female at Prahmon, Trang, March 

 7, 1896, and a male at Tanjong Badak, Tenasserim, January 6, 1900. 



The present form breeds in northeastern China and winters in 

 southeastern China, Tonkin, Laos, Annam, Cochinchina, Cambodia, 

 Siam, Tenasserim, and the Philippine Islands. 



The bulk of the population of this form winters and migrates to the 

 eastward of Siam, and there are few authentic records for the country. 



MONTICOLA SOLITARIA PANDOO (Sykes) 



Petrocincla pandoo Sykes, Proc. Zool. Soc. London, 1832, p. 87 (Dukhun, India.). 



One male, Khun Tan Mountains, 4,000 feet, November 19, 1928; 

 one male, Doi Angka, December 9, 1928; two males, Khun Tan, 4,000 

 feet, October 19, 1929, February 20, 1932; one female, Chiengmai, 

 November 26, 1928; one male, Mekhan, February 6, 1932; one male, 

 Ban Padieng, December 23, 1932; one male and one female, Bangkok, 

 September 27 and October 20, 1923; one male, Meklong, January 26, 

 1924; one male, Nong Klior, Sriracha, November 9, 1926; one male, 

 Pak Chong, November 16, 1929; one male and one female, Hin Lap, 

 December 6, 12, 1931; one female, Kao Sabap, October 28, 1933. 



The United States National Museum has received through Dr. 

 W. L. Abbott from C. Boden Kloss one male, Koh Klum, December 

 17, 1914; three females, Koh Si Chang, January 26, 1915; and one 

 female, Lat Bua Kao, October 1926 



Dr. W. L. Abbott collected one male, Victoria Island, Tenasserim, 

 December 4, 1903; one female, Victoria Point, Tenasserim, March 

 29, 1904; and one female, Bentinck Island, Mergui Archipelago, 

 March 11, 1900. 



All the males in the above series are a deep orient blue, with a 

 variable amount of subterminal cross bars and Ughter tips to the 

 feathers, the remains of an immature plumage that probably wears off 

 before the breeding season; not a single specimen has any trace of 

 rufous below. In a considerable series of this form from western 

 China (Yunnan, Szechwan, and Hupeh), there are only three speci- 

 mens that have any rufous. Judged by the range given by Stuart 

 Baker ^ this form should be M. s. affinis, but my specimens do not 

 agree with the characters assigned to it, and I am following Hartert * 

 and Lord Rothschild ^* in assigning the Chinese and Siamese speci- 

 mens of the solidly blue rock thrushes to M. s. pandoo. 



' The fauna of British India, Birds, ed. 2, vol. 1, p. 175, 1924. 



* Die Vogel der paliiirktisehen F..una, vol. 1, Heft 6, p. 675, 1910. 



^oNov. Zool., vol. 33, p. 257, 1928. 



