On Palaarctic Birds' Eggs from Tibet. 337 



under my direction, has just informed me that on the 13th 

 of June he found Rosy Gulls breeding abundantly near the 

 station "Malaya" (st. Little). 



This station lies some 150 kilometres to the west of 

 Sredne-Kolymsk (on the direct way to Verkhoyansk), on the 

 Alazeya River, near 153i° E.L. and 67|° N.L., in taiga or 

 forest-clad ground, and forests extend at least some 150 kilo- 

 metres further down the river, as I was informed by Lamuts. 

 So we may now state that all the lowlands of the northern 

 half of the Kolyma district (bordered by the rivers Chaun 

 and Alazeya, the Arctic Ocean and the Stanowoi Mountains) 

 are inhabited by Rhodostethia rosea, and this area covers 

 at least 160,000 square kilometres. In the eastern parts 

 of the Verkhoyansk d'strict it probably breeds up to the 

 Indigirka River. 



1905, July 10, 

 v. Pokkodskoe. 



XX. — On some Palcearctic Birds' Eggs from Tibet*. 

 By H. E. Dresser, F.Z.S. &c. 



Col. Waddell having kindly placed me in communication 

 with Capt. R. Steen, the Medical Officer at Gyantse, Tibet, 

 that gentleman sent to me some time ago a small collection 

 of eggs which he had taken near the town, together with 

 the parent birds, which he had procured in order that I 

 might identify the eggs, particulars of which are given in 

 the following paper. I include, in brackets, some very in- 

 teresting field-notes which Capt. Steen has also forwarded. 

 The bird-skins obtained along with the eggs are now in the 

 Zoological Museum at Tring. 



Ruticilla hodgsoni Moore. Hodgson's Redstart. 

 Dresser, Man. Palaearct. B. p. 51. 



Two clutches were sent, each consisting of two eggs, which 

 were taken on the 1st of June, 1905, with two of the parent 



* See ' The Ibis," 1 90-1, p. 525, for the last paper of this series. 



SER. VIII. — VOL. VI. Z 



