THE BIRDS OF MONGOLIA ETC. 177 



which is its northern hmit ; it breeds in the middle and highest districts 

 of the mountains. The autumnal migration takes place in October, 

 in which we found it sparingly distributed throughout the Kan-su 

 mountains. 



64. RUTICILLA FULIGINOSA, Vig. 



Ruticilla fuliginosa, Henderson & Hume^ Lahore to Yarkand^ pi. xv. 



This Himalayan Redstart was obtained by us only in Kan-su ; but even 

 here we found it very scarce, keeping exclusively to the small mountain- 

 brooks, near which it probably breeds. A male bird shot in the end of 

 August, was just moulting. In September my companion noticed, at the 

 river Ranghta, a small migrating flock. The first spring migrants were seen 

 by us in May ; but I believe they usually arrive earlier. 



This species does not occur north of Kan-su. 



65. Ruticilla erythrogastra, Gtild. Crasnochvostka crasnolruchaya, 



Ruticilla erythrogastra, Gould^ Birds of Asia^ part iii. pi. 



In China proper and Amurland this bird does not occur ; and we saw 

 it only in the Kan-su mountains, where it must be extremely scarce, as during 

 the whole summer Ave only found one pair, at an absolute height of 13,000 

 feet. In September and October, however, we frequently met with this 

 species, singly and in small flocks, on its migration along the river Tetung-gol 

 and about Koko-nor. In the spring of 1872 the first birds arrived at the 

 above localities on the 12th of April; and I believe I saw some on the 20th 

 of March 1872 in the Suma-had mountains, but am not quite certain whether 

 they belonged to this species. It differs from the other Redstarts in its 

 habits, and more resembles the succeeding species. 



VOL. II. 2 b 



