312 THE BIRDS OF MONGOLIA ETC. 



Potentilla tenuifolia. In Kan-su it occurs only sporadically, and finds there 

 its northern limit of distribution. 



The voice of U. pylzowi very much resembles that of Cynchramus 

 scTiGenichs ; and the flight reminds one of Uragus sibiricus, for which the first 

 bird I shot was mistaken when on the wing. 



] 74. Plectrophanes lapponicus, L. Punotchha laplandshaya. 



We found it wintering in Mongolia, and very numerously in the Tsachar 

 country and the Hoang-ho valley. The first birds, however, we met early in 

 December, at a distance of 250 versts (about 166 miles) S.W. of Urga ; and 

 then we also came across them on the Kiachta-Kalgan road through Gobi. 

 They usually kept together with Larks, or separately in large flocks of several 

 hundreds. 



At Lake Hanka these Buntings appear in great numbers on their spring 

 migration, which principally takes place in the middle of April, although a 

 few birds came under my notice on the 10th of March in 1868. They usually 

 form flocks of from fifty to a hundred, and frequent the burnt-out places of 

 the Sungatchin marshes, and leave them for the north about the middle 

 of May. 



175. Otocoris ALBiGULA, Bp. ucc Bmdt. Javoronoh lelogorley. 



The original specimen of O. alhigula^ Brndt., now in the Museum of the 

 Academy of Sciences, is the same as O. penicillata^ Gould (Gray, Gen. of B. 

 pi. xcii.). From this the present species differs thus : {a) the black marking 

 of the breast is much narrower, and does not join the black lines on the 

 sides of the throat ; (&) the bill is shorter, and the ear-feathers are shorter ; 

 (c) the colour of the upper parts of the body is much paler. 



We found it throughout Mongolia; but in Kan-su, Koko-nor, and 



