nensis 



E. LÖNNBERG, BIEDS FROM TRANSBAICALIA AND MONGOLIA. 19 



3IotacilIa alba (luklmnensis (Sykes). 



Kiran d" (n:o 128) ^2/5 1908. 



This specimen is intermediate between M. a. clukhu- 

 is and M. a. haicalensis but as the black extends över 

 the throat as far forward as below the gape and beyond, 

 only leaving a small white spöt on the chin narrowly connected 

 with the white of the sides of the head it appears more 

 suitable to use the former name in spite of the tiny white 

 spöt on the chin. The white of the Avingcoverts is not so 

 strongly developed as in M. a. haicalensis so that the blackish 

 bases partly shine through a little. This is still another 

 reason for using the name above. In other respects this 

 specimen agrees with the triie haicalensis specimens and 

 it thus forms a proof that these differences only are of sub- 

 specific value as intermediate links are to be found. This 

 as Avell as the foregoing specimens Avere found breeding 

 which is of interest from a zoogeographical point of view, 

 as, according to Hartert. » Genaue Grenzen weder nach 

 Norden und Siiden, noch nach Osten und Westen f estgestellt » 

 (Hartert, concerning Mot. alha haicalensis Swinh. 1. c. 304). 

 According to the same author the distribution of Hot. alha 

 duhUmensis reaches to Altai and Yenesei and in a south- 

 ward direction to Northern Turkestan. Northern Mongolia 

 where this specimen has been collected is thus beyond its 

 reguiar boundaries as far as hitherto Avas knoAvn. 



Budytes flava thunbergi (Billberg). 

 iB. f. borealis Sundevall). 



Bura cT, 9 (n:o 120, 121) '^j, 1908. Zagan ef, ^ (n:o 122. 123) ^^o 1908. 



These birds agree perfectly with some Swedish specimens 

 Avith regard to their colouration, but are richly coloured. 



Budytes citreola (Pallas). 



Chara cT, 9 (n:o 116, 117) V. 1908. Bura 9 (n:o 118) ^'^ 1908. Kiran ef 



(n:o 119) -^75 1908. 



Length of Aving in males 89—91 mm., in females 82 mm. 



It is of interest for the knoAvledge about the distribution 

 of this bird that it Avas found breeding in Mongolia at the 

 locahties mentioned above. 



