234 Dr. Walter's Ornithological Researches in Siberia. 



20. Larus affinis Reiuli. — This was the only Gull which 

 occurred in large numbers and bred in the district. The 

 nests were always placed on the large stones which stand 

 up out of the shallow Tundra-lakes. They consisted of ;i 

 massive structure of peat and clay, and were profusely lined 

 with moss and goose-feathers, chiefly flight-quills, which 

 gave the nest a peculiar prickly appearance. In the middle 

 of June the nests contained two or three eggs. The male 

 incubated and was very careful of the nest, whereas the 

 female kept more out of the way. 



21. Larus glaucus was very rare, and we did not find its 

 breeding-places. 



.2.2. Pagophila eburnea was only seen once in September 

 and once in July, and evidently does not breed here. 



23. Stercorarius pomatorhinds and (24) Stercorarius 

 parasiticus were both very common, appearing at the end 

 of May, but disappearing almost entirely when the young 

 were able to fly, so that at the end of July only occasional 

 stragglers were to be seen. 



25. Stercorarius crepidatus I think I saw once in the 

 spring, but am not certain, as none were shot. It certainly 

 does not breed in the district. 



26. Nyctea scaxdiaca. — The Snowy Owl occurs singly 

 all over the Tundra. We found no nests, but I think that I 

 saw fledged young at the end of July. 



27. Anthus cervinus. — Although I carefully watched all 

 the small birds met with, I only saw and shot one example 

 of this species, on the 5/18 June. 



28. Calcarius lappoxicus appeared on the , T , and 



1 r Id June' 



was common everywhere. In the middle of June its 

 clutches of eggs were complete. 



2 ( J. Plectrophaxes nivalis. — Prom the „ „ pi to the 



2 May 



