Distribution of Birds in North Russia. 207 



have the rump unspotted and plain grey. A comparison of 

 specimens is required before it can be established as a species 

 or otherwise. 



(24) Plectrophanes nivalis (L.). No. 87 in Tables. 



Fuller data are wanted to establish this as a breeding species 

 in the S.E. Ural, though the probability is that they do breed 

 in limited numbers (22). We have no data wherewith to 

 establish it as a resident, as a passing migrant, or as a winter 

 visitant ; and the same remarks apply to the following species, 

 P. lapponicus. For present purposes it may be as well to 

 consider it only a migrant. 



(25) Alauda arvensis, L. No. 89 in Tables. 



According to information received by SabanaefF (No. 22), 

 this species has only lately appeared at Ijma, in 64° N. lat. 

 Seebohm and I met with it very rarely at Ust Zylma (65° 26' 

 N.), where only one was obtained, and again at Viski (67° 15' 

 N.), where a second was procured, the only ones met with in 

 the N.E. District {vide Part I., ' Annals,' 1877, April, p. 285. 



(26) Budytes viridis (Gmel.) and Budytes jlavus (L.). 



Nos. 98, 99 in Tables. 



The range of these two species is as yet somewhat difficult to 

 define. Mejakoff says Budytes Jlavus (Gmel.) occurs only in 

 summer in the south of Vologda. This will, I believe, turn 

 out to be really Budytes Jlavus verus. Sabanaeff's records 

 (22) in Perm will more coi-rectly apply perhaps to the northern 

 form, B. viridis (Gmel.). Dresser (' Birds of Europe,' part xl.) 

 found B. Jlavus verus in Viborg, within our S.W. District, 

 and Von Fischer {I. c. p. 348) records it as breeding commonly 

 in the St.-Petersburg Government. 



(27) Pratincola rubicola (L.). No number in Tables. 



Where this name is recorded by authorities in their papers 

 on N. Russia, I have every reason to believe that it is almost 

 invariably applicable to the eastern representative form, P. 

 indica. Sabanaeif, for instance (No. 22), mentions it in the 

 S.E. Ural ; but the species found in Perm by Meves was P. 

 indAca^ with, as he informs me, black axillaries. 



(28) Acrocephalus dumetorum^ Blyth, and Acrocephalus 

 palustris (Bechst.). Nos. 128, 129 in Tables. 



Sabanaeff (22) includes the latter as common in the S.E 

 Ural, and as having occun-ed at Pavda (58° N. lat.) ; but he 



