NO. 2255. CATALOGUE OF SIBERIAN BIRDS— RILEY. 619 



shore of a large lake. The nest contained four white eggs. I watched for 

 awhile, but did not observe the mate. This one was working at the nest 

 and the ground at the foot of the birch was sprinkled with pickings from the 

 tree. The form is shy. — C. A. 



Only one egg from the set mentioned above by Mr. Amory is in 

 his collection. It measures 34,3 by 25.3 mm. 



54. PICOroES TRroACTYLUS CRISSOLEUCUS (Reichenbach). 



One male 80 miles from mouth of Little xlnnuj Eiver, November 

 18, 1911. It measures — wing, 120.5 ; tail, 82 ; culmen, 30. This is so 

 distinct from P. t. tridactylus that I do not see the utility of making 

 it a form of that species, unless it is known to intergrade. 



Saw three of these woodpeckers on the Little Annuj in November. I did not 

 see any but was told at Verkhni Kolymsk they were there throughout the 

 year. — C. A. 



Family HIRUNDINIDAE. 



55. HIRUNDO URBICA WHITELEYI (Swinhoe). 



Three males, Nijni Kolymsk, June 15, 16, and 17, 1915. 

 Family TURDIDAE. 



56. TURDUS MUSICUS Linnaeus. 



Two males, 7 miles north of Nijni Kolymsk, May 18 and 23, 1915 ; 

 one female, Nijni Kolymsk, June 10, 1915. 



These three birds when compared with a series from Europe are 

 more nearly hair brown on the back, while in European birds it is 

 bistre. There appears to be no difference in size. 



57. CYANOSYLVIA SUECICA ROBUSTA (Butnrlin). 



One male, Nijni Kolymsk, June 27, 1915. 



It measures as follows: Wing, 73; tail, 51; culmen, 13. 



58. GENANTHE GENANTHE GENANTHE (Linnaeus). 



One male, immature, Ajan Island, August 17, 1914; one male(?), 

 immature, Cape Bolshaja Baranov, August 11, 1915. 



Family SYLVIIDAE. 



59. PHYLLOSCOPUS TROCHILUS EVERSMANNI (Bonaparte). 



One male, Nijni Kolymsk, June 27, 1915 ; one male, 7 miles north 

 of Nijni Kolymsk, June 10, 1915; and one female, Kolyma River, 

 opposite Nijni Kolymsk, June 18, 1915. 



The above specimens, along with the series reported upon by 

 Thayer and Bangs,^ kindly loaned me by the authorities of the Mu- 

 seum of Comparative Zoology, when compared with a series of 



1 Proc. New England Zool. Club, vol. 5, Apr. 9, 1914, p. 39. 



