THE BIRDS OF MONGOLIA ETC. 193 



avoids saltwater lakes. About the middle of March it arrives in S.E. 

 MongoUa, and leaves in September; but at Halka, Ala-shan, and Ordos the 

 migration takes place apparently in the middle of August. In Ussuri 

 country it does not occur, and is scarcer in South-east MongoHa and Ala-shan 

 than M. luzoniensis. 



96. BuDYTEs ciNEREOCAPiLLA, Sav. THasogusha pepeluogolovaya. 



An occasional visitant to Mongolia, and has not been observed in 

 Kan-su. It breeds in the valley of the Yellow River, probably in company 

 with B, fiam, which w^as found there by Pere David. It is extremely 

 common in Ussuri country ; and the first migrants were observed to arrive 

 at the end of March and beginning of April at Lake Hanka, and departed 

 again in the beginning of September. 



97. BuDYTEs ciTREOLA, Pall. THasogusha jeltogolovaya. 



A very common species in S.E. Mongolia, and breeds there in the 

 valleys near rivulets and brooks. During migration we observed it in 

 Ordos, Halka, and Kan-su, but never met with it in Ussuri country. 



98. Calobates melanope, Pall. Triasogusha seraya. 



As numerous as the preceding species, but breeds in similar localities in 

 S.E. Mongolia. They first arrived at Muni-ul on the 22nd of April ; a few 

 days later at Kan-su : but here they do not appear to breed ; at least we 

 never met with any birds in summer, although some migrants w^ere noticed 

 towards the end of August. We did not find this bird in Ala-shan or Ordos, 

 and very seldom in Halka ; but though rare, it breeds in Ussuri, arriving 

 about the end of April and leaving in the beginning of September. 



VOL. II. 2 D 



