20 BIRDS AND MAMMALS OF EAST SIBERIA [^' Vof.'v^" 



bird of western Europe. This may prove to be the case, but we 

 have carefully studied a very large series of specimens, in all stages 

 of plumage, from many localities both east and west, and we were 

 astonished, not at finding differences, but at these birds all being 

 so absolutely alike, in size as well as in colors. 



Tringa ocrophus assami Mathews. 



Mr. Koren took no specimens of the green sandpiper, and is 

 not sure that he saw the bird. It resembles the wood sandpiper 

 so much in size and general appearance that he thinks he may 

 have passed it by for that species. His Russian assistant, however, 

 on June 19, 1912, brought in an abandoned nest of the redwing 

 ( Turdus musicus Linn.) containing two fresh eggs of the green 

 sandpiper, that he had found in small alders near Nijni Kolymsk. 



We use Mathews's name for the Eastern green sandpiper with 

 some misgivings. We have consulted a large series of these birds, 

 and Eastern skins in winter plumage do seem to be a little paler 

 and grayer, less brownish, above than Western ones. In the breed- 

 ing plumage, however, we were unable to distinguish them, and 

 could find no constant differences in measurements, though the 

 Eastern birds did average just a trifle smaller. 



Tringa maculata (Tunstall). 



Four specimens, adults of both sexes, were obtained at Nijni 

 Kolymsk, June 5, 1912. 



June 5 was the earliest date upon which the spotted red-shanks 

 was observed. From then on it was not uncommon at Kolyma, 

 within the limits of the larch forest, but it never was seen anywhere 

 in open tundra. On June 22, at Kalaschkowo, Kolyma, a clutch 

 of four eggs, slightly incubated, was found. They lay in a slight 

 depression in mossy ground, in dry, open larch forest. Only one 

 parent bird was seen in the vicinity of the nest. 



We use Tunstall's name viaculata {Scolopax maculata Tunstall, 



