380 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



It is a younger bird and may be described as follows: Above fuscous- 

 black mixed with dark mouse gray, becoming a much lighter gray on 

 the rump; cliin and cheeks deep quakcr drab with some fuscous feath- 

 ers mixed in ; throat whitish the feathers tipped with drab ; remaining 

 underparts neutral gray, the chest with some scattered fuscous feath- 

 ers, the belly with some white down the center forming a line; wings 

 fuscous-black, the feathers bordered narrowly on the outer edges 

 with light cinnamon-drab; tail above dark quaker drab. 



Apparently this is not an uncommon bird in northern Siam. It 

 has been taken previously on Doi Sutep and Khun Tan. On his third 

 expedition de Schauensee ** secured a series at Chiengmai, Chiengdao, 

 and IQum Tan; Lowe ^^ reports it from 28 miles east of Um Pang, 



CERASOPfflLA THOMPSONI Bingham 



Cerasophila thompsoni Bingham, Ann. Mag. Nat. Hist., ser. 7, vol. 5, p. 358, 

 1900 (Loi San Pa, 6,500 feet, southern Shan States); Ibis, 1903, p. 592, pi. 12, 



One immature male, Doi Nangka, April 26, 1931; one immature 

 male, Doi Hua Mot, August 22, 1934. 



The adult is a gray bulbul with the head and neck white; the under 

 tail coverts chestnut; the bill and feet red in life; wing about 88 mm. 

 Superficially it resembles another bulbul, M. leucocepkalus, also re- 

 ported from the mountains of Siam and also gray in one of its plum- 

 ages, with a white head and neck and red bill. The latter is a much 

 larger bird; wing about 115 mm; wdthout chestnut under tail coverts. 



C. thompsoni is rare in collections. So far the immature is believed 

 to be undescribed. The description of the above immature male from 

 Doi Nangka is as follows: Alouse gray, lighter below, head and neck 

 white, two bands of deep mouse gray from the nostrils over the head 

 to the nape; another narrow gray stripe on each side from the lores 

 over the eye separated from the gray band from the nostril by a 

 narrow white line; rictal streak gray; the flight feathers washed out- 

 wardly along the outer web with dark olive-buff; belly washed with 

 olive-buff; under tail coverts avellaneous. 



The second male is similar, but older, the gray on the head is 

 more irregular; some of the primaries have been replaced by new and 

 dark brownish black feathers without the olive-buff edging. 



De Schauensee ^° took a male on Doi Sutep, 5,500 feet, December 

 30, 1928. Deignan ^' collected one of a pair in March 1931 at the 

 same place. Later ^^ he took two at 3,800 feet on Doi Sutep, May 13 

 and 14, 1935; and one on Doi Angka, 5,000 feet, September 8, 1935. 



5' Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 201, 1934. 



"Ibis, 1933, p. 268. 



«> Proc. Acad. Nat. Sci. Philadelphia, vol. 81, p. 539, 1930. 



«' Journ. Siam Soc. Nat. Hist. Suppl., vol. 8, p. 140, 1931. 



*' Journ. Siam Soc. Nat. Hist. Suppl., vol. 10, pp. 65, 109, 1935-36. 



