2 ARKIV FÖR ZOOLOGI. BAND 2. N:0 9. 



and at the same time additional knowledge about the geo- 

 graphic distribution of different forms has been acquired. 



The localities where these birds have been collected are 

 chiefly at Baimgol, which is a tributary to the river Tekes, 

 and on the mountain Chantengri. As the number of species 

 amounts to no less than 79 the collection gives a pretty good 

 idea of the ornis of Tianshan even if the collection is not 

 by far complete. Especially the smaller birds are lacking. 



Most of the specimens belong now to the Natural Hi- 

 story Museum of Stockholm. 



1. Podicipes auritus (L.) 



o^ ^^li, 99 ^l5, ef 76 1902 Baimgol. 



2. Podicipes cristatus (L.) 



ef i«/8 1902 Baimgol. 



A young Grebe hatched the same year. 



3. Phalacrocorax carbo medius Nilsson. 



Two young specimens ^'"js 1902 Baimgol. 



Wing 330 mm. tail 160-166 mm. culmen 61 mm. tarsus 

 64 mm. 



The very small size of these and other specimens from 

 Central Asia is very striking when these Cormorants are com- 

 pared with Cormorants from the Scandinavian Westcoast. But 

 in the same respect they agree quite closely with Cormorants 

 which in former days were found nesting and breeding in trees 

 in Southern Sweden as well at certain lakes as on the small 

 wooded Islands at the Baltic coast, Nilsson distinguished 

 this bird with the subspecific name medius and I have retained 

 this name for the quite similar bird from Central Asia. 



4. Botaurus stellaris (L.) 



ef 5/o 1902 Baimgol. 



Wing 320, tail 414, culmen 65 mm. 



This Bittern has a very short bill, but the variability of 

 this organ is so great that the shortness in this case must 

 be regarded as of no importance. 



