498 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



This curious little bird, with no visible tail, on Doi Ang Ka in- 

 habited the deepest and dampest evergreen, where, in company with 

 Alcippe m. laotiana, it kept to the lower undergrowth. It is so intense- 

 ly inquisitive, coming to the edge of the trail to scold the intruder with 

 shrill, piping notes, that, where numerous, it can scarcely be 

 overlooked. 



A female from Doi Ang Ka, September 5, is in postnuptial molt. 



Adults collected by me had the irides brown ; the maxilla blackish 

 brown; the mandible orange; the rictus and interior of the mouth 

 orange ; the feet and toes horny brown ; the claws horny yellow. 



The adult of either sex has the entire upperparts olive-green, this 

 color, on the crown and nape, strongly suffused with golden ; a post- 

 ocular streak black; the sides of the head and neck and the entire 

 underparts slaty gray, albescent on the center of the abdomen; the 

 thighs and under tail coverts olive-green. 



A series of 52 adults of this genus from the Asiatic mainland wholly 

 support the views expressed by Ludlow and Kinnear (Ibis, 1937, 

 pp. 257-261) as to the probable existence of two continental species, 

 T. cyaniventer Hodgson and T. olivea (McClelland), which, in certain 

 areas (Sikkim, Upper Assam, Upper Burma), are cohabitant. I dis- 

 cover no trace of intergradation, and so each individual may without 

 hesitation be placed with one or the other form. 



I have examined six of the nine or ten examples so far taken in 

 Thailand and find all to be T. olivea. Since only cyaniw enter is known 

 from Annam, it is noteworthy that Chasen and Boden Kloss assert 

 (loc. cit.) that their two birds from Doi Suthep (not seen by me) "like 

 specimens from Annam . . . have the top of the head green and not 

 golden brown ..." I suggest that these authors have been misled by 

 published descriptions and by their lack of suitable comparative 

 material and that the examples in question, like all the others, will 

 prove to be T. olivea. 



CETTIA SQUAMEICEPS (Swinhoe) 



Scaly-headed Bush Warbler 



Tribura squameiceps Swinhoe, Proc. Zool. Soe. London, 1863, p. 292 (Canton, 



China). 

 Urophlexis squameiceps, Rogers and Deignan, Proc. Biol. Soc. Washington, 1934, 



p. 92 (Doi Suthep). 

 Urosphena squameiceps squameiceps, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1936, p. 117 (Doi Suthep). 



I have found the scaly-headed warbler only seven times, on Doi 

 Chiang Dao and on Doi Suthep, at 2,700 and 3,500 feet; the extreme 

 dates for its stay are November 24 (1936) and March 5 (1932). 



