2 Mr. J. A. Harvie Brown on the 



present tabulation to the districts which have been pretty 

 fully worked ; but upon consideration of this I concluded 

 that, as my paper is intended not only to show what has 

 been done omithologically in North Russia, but also what 

 remains to be done, it would serve my purpose better to include 

 the comparatively unworked districts also, with certain reser- 

 vations. One of these reservations is, the withholding of the 

 recorded faunal value of the species, in many instances, beyond 

 the record of first value (viz. simple recorded presence : vide 

 explanation of symbols^ further on), as, for instance, in the 

 N.W. District. By doing this the continuity of the Table 

 will not be afiected, while at the same time all past work, 

 with the exception of these reservations, will be placed, once 

 for all, within easy reach. Further elucidation of the fauna 

 can thus at any time in future be worked into the present 

 Tables without altering their form or permitting them to get 

 out of date. 



With regard to the northerly distribution of insectivorous 

 species in Russia and in Norway, it will only be necessary 

 here to institute the general comparison that they will be 

 found, wnth not very many exceptions, to reach localities in 

 Russia situated from four to six degrees of latitude south of 

 that which they reach in Norway. 



In the 'Ann. & Mag. of Nat. Hist.' for April 1877, 

 I have already treated of the latitudinal distribution of the 

 birds of North-east Russia. Since this part of my paper was 

 sent to press, I have been able to consult most of the authors 

 who have treated of the birds north of 64° 30' N. lat. and to 

 compare their records. As already mentioned, however {loc. 

 cit. p. 279), these materials are still insufficient to admit of an 

 accurate knowledge of the minutise of latitudinal distribution, 

 owing to the large extent of unexplored country. The present 

 part of my paper therefore does not profess to exhaust the 

 subject or even to approach completeness, but is merely a 

 stepping-stone towards fuller records. In other words, I have 

 thought it advisable to collect our already acquired knowledge 

 of North-Russian species, and place it in a more accessible 

 form. 



To enable me to do this easily, and on a uniform plan, I 

 have, in the first place, divided North Russia into two great 

 divisions, which I propose to call the " Northern " and the 

 " Southern Divisions." The former, with which we have 

 more particularly to do at present, is included between the 

 parallels of 64° 30' N. lat. and 70° N. lat. The Southern 

 (which I propose to make the subject of a later part of this 

 paper) is that portion south of 64° 30' N. lat., and between 



