LÖNNBERG A COLLECTIOX OF BIRDS FROM TIANSHAN. 15 



46. Sterna hirundo tibetana (Saund.). 



ef 2^5, 9 -/5, 5 -5 1902 Baimgol. 



Wing -f 273, ^ 280, 9 262 mm. 

 Tail ,, 146, ,, 143, ,, 145 „ 



Culmen ,, 35, ,, 37, ,, 34 ,, 

 Tarsus ,, 21, ., 20, „ 20 „ 



These specimens are verv conspicuously different from 

 average Scandinavian Terns being decidedly darker above 

 and below. 



47. Hydrochelidon nigra (L.) 

 d" 20/5, 9 1^/5 102 Baimgol. 



Wing cT 217, tail ef 86, culmen cT 30, tarsus cT 17 mm. 

 „ 9 215, „ 9 87, .. - 30. „ S 16 „ 



This loeality is probably the most eastern where this 

 bird has been found. 



48. Pterocles arenarius (Pallas.) 

 ef 23/^ 1902 Chantengri. 



49. Turtur turtur (L). 



ef ^/ö 1902 Chantengri. 



Wing 175, tan 115. culmen 17, tarsus 24 mm. 



The size of this specimen seems to be rather small even 

 for the western species thus it is still smaller than the eastern 

 T. ferrago. The locahty mentioned is probably at the eastern 

 boundary line of the species. 



50. Turtur ferrago Eversm. 



ef 1-/8, cf 1^8, 9 ^/8, 9 1^,8 1902 Baimgol. 



Wing 183—185 mm. 



All four specimens are young, but I regard them as be- 

 belonging to this species and not to T. orientalis, because the 

 under tail-coverts are pure white and the band across the 

 tail is also almost white. The size agrees with T. ferrago. 



