E. LÖNNBERG, BIRDS FROM TRANSBAICALTA AND MONGOLIA. 35 



measuring about 265 mm. The younger (one year old) Hobby 

 is still darker almost black above and very broadly streaked 

 beneath. Its wing measures pnly 253 mm., although it is said 

 to be a female. 



Cerchneis tinnunculus (Linn^us). 



Wereuv 9 (n:o 32) ^Vc, 9 (n:o 33) "h 1908. Kossogol cT (signed: »9») (n:o 

 55) ^7'; 1908. Kjachta d" (n:o 65) 20/5 1908. 



These Kestrels cannot be distinguished from Swedish 

 specimens when a number of the latter is used for comparison. 

 N:o 32 has a tinge of vinous red över the mantle but the same 

 is found in some Swedish specimens as well. N:o 33 is rather 

 påle above. The measurements of the wing is the same as 

 in Swedish Kestrels. 



Cerchneis iiaumanni pekinensis (Swinhoe). 



Kjachta ef (n:o 57) '7^ 1908. Dsargutscheji ef (n:o 71) ^V^ 1908. 



Length of wing 252 — 254 mm. 



Both these specimens have been labeled $ $ but are 

 certainly typical c? c?. 



All wing-coverts to the bend of the wing and a little beyond 

 are grey although, some have rufous tips or margins. This 

 proves that these birds have to be counted as belonging to the 

 Chinese race which is of interest from a zoogeographical point 

 of view. 



A specimen from the »Karanowskischlucht » is named 

 by ScHALOW^ Cerchneis naumanni ^^"^^^^^ and this author 



•^ pekinensis 



writes: »Die centralasiatischen Röthelfalken stehen in der 

 Mitte zwischen C. naumanni und pekinensis.» 



Neither race has been recorded by Taczanowski (1. c.) 

 for Eastern Siberia. 



Erythropus amiirensis (Rådde). 



Kjachta ef (n:o 82) -75 1908. 



Milvus goAinda Sykes.^ 



Iro (f (n:o 18) ^5 1908. Kiran? d (n:o 16) 275 1908. 



The length of the wings is resp. 456 and 475 mm. 

 According to their characteristics these specimens are 



^ Journ. Ornith. 1908 p. 106. 



^ In this collection is also a specimen of Milvus korschun (Gmelik] 

 from Petropavlovsk, Western Siberia ef (n:o 80) "A 1908. 



