31)2 PX'CSO^OTID^E. 



Genus XANTHIXUS Gates, 1889. 



This genus was created by Gates for the reception of Xanthixus 

 flavescens, a species differing from all its nearest allies in having 

 the tail-feathers strongly graduated. The outermost tail-feather 

 falls short of the longest by a distance equal in length to the 

 tarsus; the crest resembles that of Hemixus flavala and the wing 

 that of Molpastes. 



There is only one species, which I divided into two races iu 1917, 

 one of which was again rennmed by Kloss in 1919 on the grounds 

 that I had renamed the original race from Arrakan instead of the 

 new race. I have again compared the fine series in the British 

 Museum and find that my original distribution is quite correct. 

 Kloss's name sordidus therefore becomes a synonym of my vividus. 

 The types of flavescens from Arrakan, which are in the Indian 

 Museum and were inspected by Kloss, are probably discoloured 

 by age, as fresh specimens from Arrakan and the Chin Hills show 

 beyond all doubt that they belong to the same form as that irorn 

 Assam and not to the more yellow form from Eastern Burma. 



Kloss's birds from Anuam may quite possibly be yet another 

 form, though I cannot distinguish any differences, iu which case 

 they would retain the name sordidus. 



Xanthixus flavescens. 



Key to Subspecies. 



A. Below paler, grey of abdomen slightly suffused [cans, p. 392. 



with yellow not extending to breast X. flavescens jlares- 



B. Below "darker on breast and flanhs and yellow 



extending to breast or even to throat X.fl. vicidus, p. 393. 



(408) Xanthixus flavescens flavescens. 

 BLYTH'S BULUUL. 



Pycnonotusflavescens Blyth, J. A. S. B., xiv, p. 568 (1845) (Arrakan). 

 Xanthixus jftavescens. Blanf. &, Gates, i, p. 275. 



"Vernacular names. Dao lulip-yun-mo (Gachari). 



Description. Forehead and crown dark brown, the feathers of 

 the front half of the crown edged with grey, those of the hinder 

 half with olive-green ; upper plumage olive-brown tinged with 

 flavescent on the rump ; wings olive-brown ; edges of quill-feathers 

 olive-green ; tail olive-brown, shafts rather darker brown, the three 

 outer pairs of tail-feathers faintly tipped with yellowish white; 

 lores black; a short supercilium from base of upper inaudible 

 yellowish white ; cheeks and ear-coverts greenish givy ; chin pule 

 grey; throat, breast and flanks grey, slightly suffused with yellow 

 on the lower breast ; abdomen dull yellowish ; vent and under 

 tail-coverts bright yellow ; edge of wing and under wing-coverts 

 fulvous yellow. 



Colours of soft parts. Iris dark brown ; bill, legs and feet black. 



