6 ON EUROPEAN SQUIBKELS. [Jail. 17, 



winter coat in perfectly typical specimens only differing from thit 

 of summer in its much greater thickness. I have seen specimens 

 from a number of German localities, in the more northern of 

 which the winter coat contains a more or less amount of white oi 

 grey hairs on the flanks, thus iutergrading wath the ne.xt subspecies. 



SciuRus TULGARis TABitTS Kerr, op. cit. p. 256 (nee Pallas, Zoogr. 

 Eoss.-As. 1831, i. p. 183). 



Hab. Northern Scandinavia, Lapland, Northern and Central 

 European Eussia, Poland, East Prussia, parts of Hungary, and 

 "Western Siberia. 



Colour — in summer red, but lighter than S. rufus; in winter 

 the body is more or less completely shining grey, nearly white, 

 with the tail and ear-tufts red. In some specimens there is also 

 a trace of the red colour on the dorsal line, head, and legs. 



ScitJBUS TULGABIS TTPICUS. 



Hah. South Norway and Sweden. 



Colour — in summer the body resembles in its brownish-red 



tints that of S. leucurus, but the tail is red, and does not bleach 



' when the hairs are old and worn ; in winter, the body-coat is 



composed of soft greyish-brown hairs, the summer tints remaining 



visible to a variable extent on the dorsal line and legs. 



SciURUS VULGARIS CALOTUS Grav, Ann. Mag. N. H. xx. p. 272 

 (1867). 



Hah. Eastern Siberia, the exact limits uncertain ; but specimens 

 in the British Museum labelled as from Wilni (Siberia), Seoul 

 (Corea), Southern Manchuria, Sacbalin Island, Pekin, and Nepal 

 all appear to belong to a single form. 



Colour — in winter darker than S. varius. I have seen no 

 summer skins which are not melanisms, but a winter skin which 

 I purchased at Hakodate, Tezo Island, shows a trace of rufous 

 colour on the central dorsal line. 



This subspecies might possibly provo to be identical with that 

 from the Eiver Obi, to which the naine of S. vulgaris argenteus 

 had been given by Kerr (op. cit.). 



In conclusion Mr. Barrett-Hamilton said that he ventured to 

 suggest that when a further knowledge of the local variations of 

 European mammals should have been gained, it might be found 

 that the European Continent might be divided, for the purposes 

 of study of the geographical distribution of mammals, into some 

 such areas as those represented by the different subspecies of 

 Squirrels to which he had now drawn attention. 



The following papers were I'ead : — 



