THE BIRDS OF MONGOLIA ETC. 181 



(c) From the lower mandible and under the cheeks there is a white line 

 (like that of C, Icamtschatkensis), which C. pedoralis does not possess, or at 

 least only very faintly marked. 



(^) The white eyebrows are much narrower ; in (7. pedoralis, however, 

 they almost join each other on the forehead. 



(e) The black band on the tail of my bird is much wider. 



Measurements : — 





Lengtli. 



Wing. 



Tail. 



Tarsus. 



Gape. 





in. 



in. 



in. 



in. 



in. 



d 0. pedoralis . 



? 



3 



2-62 



112 



069 



6 C, tschehaiewi 



. 6-5 



302 



2-63 



2 25 



0-75 



Quills 4 = 5 longest, 6 = 3 somewhat shorter, 2 = (almost) 9; first twice as 

 long as its coverts. In the sharply rounded tail of twelve feathers, the outer 

 ones are 0''-35 shorter than the central. Culmen black ; tarsus in front 

 black, behind horn-coloured ; toes blackish ; claws black ; iris dark brown. 



Ma/^.— Crown, back, and rump dark olive; and the same shade is 

 also perceivable on the back and sides of the neck, and also on the ear- 

 coverts ; the small and median upper wing-coverts are dark grey. Moustachial 

 stripes and eyebrows white ; chin and centre of throat bright silky crimson ; 

 the edge separating the latter colour from the white moustachial stripe, lores, 

 and crop are black. Breast, stomach, and vent white ; sides olive-grey. 

 Quills and large wing-coverts brownish, wdth wide edges of the colour of 

 the back ; under wing-coverts grey. Two central tail-feathers blackish 

 brown ; the others are black wdth a white base and white spots on the ends ; 

 the upper tail-coverts are blackish grey. 



Female.— J)^vk olive-colour above, dirty white underneath; sides of 

 neck and crop dirty grey. Flanks olive-grey ; eyebrows white ; ear-coverts 

 brown ; lores black. Quills and their large upper coverts brown, widely 

 edged with the colour of the back ; lesser coverts dirty grey ; under wing- 



