of the Ratufa (Scinnis) bicolor Group. 493 



Ratufa gigantea (MacCl.). 



Sciurus (/iganteus*, MacClelland, P. Z. S. 1839, p. loO Anderson, An. 

 Zool. Res. p. 215 (1879). 



Sciurus macntroides, Hodgson, J. A. S. B. x. 1841, p. 915 (no descrip- 

 tion) ; Jerdon, Mamm. Ind. p. 168 (1807). 



Sciurus bicolor, Sparr., Blanford, Faun. Brit. Ind., Mamm. p. 373 (1891). 



Sciurus bicolor, \RY. ffiffanteus [MacCl.), W. Sclater, Cat. Mamm. Ind. 

 Mus. p. 8 (1891). 



General colour above, including head and outer side of limbs, 

 dark black, below yellow varying in intensity. Tail same 

 colour as the back throughout. The skull is large and broad, 

 the pterygoids and basioccipital processes being large and 

 well developed ; the latter turn inwards away from the bulla 

 and end in a rounded head. 



Dimensions (in flesh) : — 



Head and body 417 raillim, ; tail 477; ear 30; hind 

 foot 82. 



Skull : greatest length 80 ; basal length G2 ; zygomatic 

 breadth 48*7 ; greatest length of nasals 24 ; length of palate 

 to henselion 29. 



Ratufa bicolor (Sparrm.). 



Sciurus bicolor, Sparinian, Gotheb. Vet. Svensk. Ilandl. i. p. 70 (1778) ; 



Thos. P. Z. S. 1886, p. 67 ; Anderson, An. Zool. Res. p. 215 (1879) ; 



Blanford, Faun. Brit. Ind., Mamm. p. 373 (1891). 

 Sciurus bicolor, var. typicus, W. Sclater, Cat. Mamm. Ind. Mus. p. 7 



(1891). 

 Sciurus javeusis, Zimm. Geog. Ges. ii. p. 342 (1780). 

 Sciurus albiceps, Desm. Nouv. Diet. Hist. Nat. x. p. 105 (1817). 

 Sciwus Leschenaulti, Desm, Mamm. p. 335 (1820). 

 Sciurus hi/poleucos, Horsf. Zool. Res. (1824). 

 Sciurus humeralis, Coulon, M6m, Soc. So. Nat. Neuchatel (1835). 



Smaller and paler than the preceding species and much 

 lighter across the back. General colour above dark brown, 

 considerably bleached across the centre of the back, but 

 varying greatly in shade, some specimens being nearly black. 

 Colour of underparts and tail as in the preceding species. 

 Ears never tufted. Skull shows no marked differences from 

 that of R. gigantea except in its smaller size. 



Dimensions : — 



Skull: greatest length 71*5 millim. ; basal length 57; 

 zygomatic breadth 45 ; greatest length of nasals 22 ; length 

 of palate to henselion 27. 



With regard to the smaller size of this species, it is as 

 well to give the limits of variation, so as to show how 



* For full synonymy of this and the next species see Anderson and 

 W. Sclater as quoted above. 



