Birds of the Yenisei Ricer. 451 



The following is a list of those birds which I have not 

 observed before in the valley of the Yenisei, with the addition 

 of a few remarks in cases where ray experiences in 1900 

 differed from those of previous years. 



4. ^TURDUS DUBIUS Bccllst. (T. FUSCATUS Pall.). 



A large series of the eggs of this bird was obtained^ for we 

 found 78 of them in fifteen nests. One of these was placed 

 as high as 12 feet from the ground in a larch-treCj though 

 the majority were much lower. At Yeniseisk one bird 

 was shot. 



7 a. ■^Turdus naumanni Temm. 



One male was shot by Peck in lat. 66° N., but although 

 Ave often brought down Thrushes as they flew off their nests 

 in the hope of obtaining eggs of Turdus naumanni, they all 

 proved to be Turdus dubius except one, which Mr. Dresser 

 considers to be a female of Turdus naumanni in worn 

 breeding-plumage : with this opinion Dr. Suschkin agrees. 

 Mr. Dresser describes this bird as follows : — " It has no 

 trace of chesnut or of black on the wings ; the under surface 

 of the tail is pale brown, with a faint rufous tinge, and the 

 upper surface dark brown ; the rump is pale rusty-red ; the 

 flanks are rusty-red, with white margins to the feathers ; the 

 under tail-coverts the same colour, with broad white margins 

 and broad white tips ; and the upper breast is spotted with 

 blackish brown.^^ 



The nest belonging to this Thrush contained six eggs. 



9. *PrAT1NCOLA MAURA (Pall.). 



A nest of the Eastern Stonecliat at Yeniseisk contained 

 young on June lltli. 



16. ^Phylloscopus supkrciliosus (Gm.). 



In my last paper (Ibis, 1898, p. 496) I stated that the 

 Yellow-browed Warbler was quite the commonest of the 

 small forest-birds. In 1900 it was very scarce. 



20. *Phylloscopus borealis (Blasius). 

 On this journey the Arctic Willow-Warbler was obtained 

 at Yeniseisk. 



