158 W. T. Blaiiford — On some Mammals from Tenasserim. [No. 3, 



S. rufige- S. lokri- S. atridor- S. cani- 



nis. oides. salis. ceps. 

 Breadth across behind post orbital 



processes, 0-75 065 07 082 



of frontals between orbits, 0'62 0^63 75 0-9 



Length of suture between nasal bones,... 062 0-53 0*52 073 



„ of upper row of molars, 0-42 036 0*37 0-44 



„ of bony palate behind incisors, .. . 09 082 0*82 1' 

 Width of bony palate between posterior 



molars, 0'27 0*24 0-23 03 



Length of mandible from angle to sym- 

 physis, 1- 0-96 105 125 



„ of row of lower molars, 42 0-37 038 0-44 



Four specimens of this squirrel were obtained by Mr. Davison at the 

 end of January and beginning of February 1877 ; all were procured in 

 dense forest, at an elevation of above 5000 feet, on the sides of Mooleyit, 

 a lofty mountain east of Moulmain on the range separating the Houngda- 

 rau from the Thoung Yin valley. A single specimen was subsequently pro- 

 cured in the same locality by Mr. Limborg and this was the first to reach me. 



None of the other Burmese or Himalayan squirrels resemble the pre- 

 sent form, nor am I acquainted with any Malay species with similar coloura- 

 tion. The nearest approach is perhaps made by S. pernyi, found at Se- 

 chuen in China.* Ibis species has a yellow spot behind the ear, the lower 

 surface of the tail is ferruginous, and the belly white, but it wants the 

 ferruginous cheeks, it has no white tips to the hairs in the upper surface 

 of the tail, and it is more rufous above, the latter character being, however, 

 of little or no importance. 



The Himalayan Scimms loJcriah also possesses, I find, the small whitish 

 tuft behind the ear, though less developed than in S. rujigenis ; the 

 colouring of the lower parts and tail are, however, conspicuously distinct 

 in the two forms. The presence of the white spot in /S'. lohriaJi affords an 

 excellent character for distinguishing this species from ^. lokrioides.f 



* Milne Edwards, Rev. et Mag. Zool. 1867, p. 230, pi. 19. 



t According to Gray, A. M. N. H. Ser. 3, XX, pp. 274, 281, the true S. lokrioides 

 of Hodgson is the species with a black tail tip, S. assamensis of McClelland and Blyth. 

 The species called S. lokrioides by all Indian naturalists is re-named Macroxue similis hy 

 Gray. As Hodgson's types are in the British Museum and are quoted by Dr. Gray, 

 he may bo right, though it is very remarkable that he should be, because the species 

 commonly referred to S. lokrioides abounds in Nepal, where Hodgson of course collect- 

 ed it, whilst I doubt if S. assamensis be found there. Dr. Anderson has especially 

 examined the British Museum specimens, and will I believe clear up these dijOBLculties. 



