103 



TWO NEW RACES OF SCIURUS FINLAYSONI 

 BY C. BODEN KLOSS, F. Z. S. 



Examination of a series of " white " squirrels from practi- 

 cally the type locality of Sciurus finlaysoni tachardi (Robinson),! 

 which the collector of the type, Mr. T. H. Lyle, C.M.G., informs me 

 is in North Siam on the Nam Nan, some 30 miles north-east up 

 river from Utaradit, towards the mouth of the Nam Pat, 

 convinces me that at some period, or season, this race assumes a 

 wholly or partial bay pelage. Animals which do not undergo this 

 change must be regarded as distinct subspecies and I recognise the 

 following additional continental forms : — 



1. Sciurus finlaysoni prachin, subsp. no v. 



Sciurus finlaysoni, Kloss, Journ. N. H. S. Siam, II, pp. 16 

 30 (1916). 



Pelage always rich creamy : only the concealed bases of 

 the hairs grey. 



Type. Adult male from Krabin, Central Siam, obtained by 

 Messrs. E. G. Herbert and Malcolm Smith's collectors on 11 Nov. 

 1915. No. 2048/CBK. 



Specimens examined. Five from the type locality and one 

 from Chanteuk. Eastern Siam. 



For measurements (external dimensions taken by native 

 collector) and further details see reference cited above. 



2. Sciurus finlaysoni rajasima, subsp. nov. 



Sciurus finlaysoni finlaysoni, Kloss, Journ. N.H.S. Siam 1,1915, 



p. 225 (Lopburi). 

 Sciurus finlaysoni, id. op. cit., II, 1916, pp. 83, 87.(Pak Jong). 

 Sc. finlaysoni tachardi, id. op. cit., Ill, 1919, pp. 368, 401, 



(Lat Bua Kao). 

 Pelage creamy but with the grey basal portions of the hairs so 

 increased that the general appearance on the upper surface of head, 

 body and limbs is often that of a greyish animal with cream-tipped 

 hairs. Type. Adult female from Lat Bua Kao, E. Siam, collected 

 by C. Boden Kloss on 10 October, 1916. No 2132/CBK. 



1 Callosciurus finlaysoni tachardi Robinson, Journ. F. M. S. Mus., 

 VII, p. 36 (1916). 



VOL. IV, NO. 2, 1920. 



