418 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



the shaft; from crassirostris by the slenderer, less heavy bill; from 

 caeruleus by having the under mandible yellow. 



Both eugenei and temminckii occur in northern Siam, the former 

 being the commoner. Lord Rothschild says they occur together in 

 the same areas. ^^ 



MYOPHONUS EUGENEI EUGENEI Hume 



Myiophoneus eugenei Hume, Stray Feathers, vol. 1, p. 475, 1873 (Thayetmyo). 

 Myiophoneus stonei de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, vol. 81, 

 p. 469, 1929 (Chiengmai, northern Siam). 



Two females, Doi Nangka, November 6, 1930, April 26, 1931; one 

 male, Pang Meton (Doi Nangka), May 4, 1931; one male, Doi Sutep, 

 February 3, 1932; one male, Meklian, February 8, 1932; one male, 

 Song Kwe Valley, January 20, 1933. All these localities are in 

 northern Siam. 



The United States National Museum possesses a good series of 

 this species from the mountains of Yunnan and Szechwan, China; 

 none was taken in the winter, however, and it may be that they migrate 

 farther south after the breeding season. A series of seven males from 

 Cliina (Yunnan and Szechwan) are darker and duskier above than 

 the series from Siam. The foreheads m the Siamese birds are an 

 especially bright, shining, dark violet-blue, much darker and duslder 

 in the Chinese series. A female collected by C. Boden EHoss at Koh 

 Lak, southwestern Siam, November 16, is a lighter bluish violet than 

 any in the northern Siam series. 



The four males from Siam measure: Wing, 170-181 (176); tail, 

 116-135 (123.9); culmen, 28.5-35 (30.6) mm. Seven males from 

 Yunnan and Szechwan: Wing, 168-189 (181.6); tail, 114-134 (127.4); 

 culmen, 28-32.5 (30.2) mm. 



This species evidently breeds in northern Siam, and Dr. Smith's 

 birds would indicate that it is there also in winter, so it evidently does 

 not migrate far if at all. The birds breeding in China may move 

 south, possibly passing more to the eastward, or just move from the 

 high elevations, where they breed, to the vallej's to winter. 



The species ranges from the mountains of Yunnan and western 

 Szechwan, China, to eastern Burma, northern and southwestern 

 Siam, cast to Tonkin, Laos, Annam, and Cambodia. 



De Schauensee ^^ took a small series on his third expedition at 

 Chiengmai, Chiengdao, Kengkoi, and the southern Shan States; 

 with this additional material he finds that his Myiophoneus stonei is 

 untenable. 



" Nov. Zool., vol. 33, p. 256. 1926. 



" Free. Acad. Nat. Scl. Philadelphia, vol. 86, p. 212, 1934. 



