THE BIEDS OF MONGOLIA ETC. 173 



57. Regulus himalayensis ?, Blytli. Coroleh hymalayshey. 



Only one male was obtained by us, in Kan-su, in August, in bad 

 plumage ; and consequently I cannot definitely state whether it belongs to 

 R. japonicus or R. himalayensis, which latter is very close to R. cristatus of 

 Europe. I marked my specimen under the questionable name of R. 

 himalayensis^ as only this species has been found by Pere David in 

 Mupin. Measurements — length S'^S, wing 2'^-03, tail V'%, culmen 0'^-47, 

 tarsus 0''-62. 



In Ussuri country I once met with a pair of Crested Wrens. I shot the 

 male, and entered it in my book as R. Jlavicapillus ; but as the specimen was 

 very much mutilated I did not preserve it, which I now much regret, as I 

 did not meet with it again. 



58. RUTICILLA AUROREA, Pall. 



Ruticilla aurorea, Temm. & ScUeg. Faun. Japon. pi. xxi. 



This Redstart is very common in S.E. Mongolia, and breeds in the 

 bush- covered and wooded mountains^ particularly so about Muni-ul. The 

 first migrants arrived on the 21st of March, and paired early in April. At 

 that time the males often fight, running against each other with spread wings 

 and tail, and constantly uttering a short hissing note. By the end of June 

 the young had left the nest; one, however, with unfledged young was 

 found by us in the middle of July : probably it was a second brood of the 

 year. 



R. aurorea is extremely partial to woods, and does not occur in localities 

 where there are no trees and bushes. I cannot with certainty state whether 

 it breeds in Ala-shan or not. It does not appear to inhabit Kan-su, but is 

 common in Ussuri country and about Lake Hanka. The first migrants 

 arrived in the beginning of April. 



