of the Ratufa (Sciurus) bicolor Group. 497 



Dimensions of type (from skin) : — 



Head and body 400 millim. ; tail 450; hind foot 70. 



Skull: greatest length 67; basal length 52-2; length of 

 nasals 19; length of palate to henselion 26'2. 



Hah. Baram District, Sarawak. 



Type B.M. 99. 12. 9. 40. S, Baram District, Sarawak, 

 15th June, 1898. Presented by Charles Hose, Esq. 



This form seems subject to many slight local variations. 

 Mr. Hose informs me that those found on the hills are ruddier 

 on the cheeks than those from the low-lying country, and the 

 tail has a tendency to be ringed with rufous caused by sub- 

 terminal annulations to certain of the hairs. 



Ratufa epMppium sandakanensis^ subsp. n. 



Sciurus bicolor ephippium, Thos. P. Z. S. 1889, p. 230. 

 Sciurus ephippium^ Motley and Dillwyn, Coutrib. F'auna Borueo and 

 Labuau, 1855, p. 3. 



Resembling H. epMppium haramensis, but the hairs on 

 the back black, not brown, with yellowish-white subterniiual 

 annulations instead of rufous. These annulations are absent 

 along the centre of the back, thus forming a dark median 

 dorsal stripe which starts between the shoulders and runs to 

 the root of the tail. Tiie feet, inner sides of limbs, and under- 

 parts are of a dirty yellowish white, and on the cheeks is a 

 small patch of ferruginous. 



Dimensions of type (from flesh) : — 



Head and body 350 millim. ; tail 540; hind foot 74. 



Skull : greatest length 68 ; basal length 54 ; zygomatic 

 breadth 42 ; length of nasals 20 ; length of palate from 

 henselion 26. 



Hab. Sandakan, British North Borneo. 



Type B.M. 82. 11. 16. 3. Sandakan, British North 

 Borneo. Presented by Mr. A.rch. McKinlay. 



The Museum possesses several other specimens of this 

 form, all from North Borneo ; they differ slightly from the 

 type in having the head, neck, and feet more rufous, which 

 is probably due to altitude, as noticed in the preceding species. 



Ratufa ephippium hunguranensis (Thos. & Hart). 



Sciurtts ephippium hunguranensis, Thos. & Hart, Nov. Zool. i., Sept. 

 ]894, p. mS. 



This and the two remaining species are all very closely 

 allied and are island forms of the typical mainland race. 

 They are characterized by their duller colour and the absence 

 of the dark median dorsal area, all the hairs on the upper 



Ann. & Mag. N. Hist. Ser. 7. Vol. v. 32 



