neio MammaU from French Indo-China and Siam. 89 



4. Ratufa bicolor smithi, subsp. n. 



A larjje race of R.bicolur (Sparmni.), differing from the 

 typical form in haviiif^ the back ahiiost entirely biiffv, the 

 tail black, and tiic yellow of the limbs sharply mar<^ined. 



Below antimony-j'ellow to warm bnfF extending over 

 the sides of the head and neck to the bases of the ears, 

 over the npper part of the fore-limbs from thumb to shoulder 

 and frequently over the upper side of the hind feet. 



Eyelids, a long moustachial stripe passing through the 

 roots of the vibrissa3, nose, lips, and two spots on the chin 

 black. 



Remainder of pelage varying from black to brown, except 

 for a brownish-buff patch between the ears and the whole of 

 the dorsal area from nape to rump, where all the hairs have 

 long buft'y tips ; generally, but uot always, there is a line of 

 clear black between the buff of the upper and lower parts. 

 The buff-tipped hairs extend over part of the thighs, but 

 rarely to shoulders or fore-limbs. 



Feet and tail generally clear black, though sometimes the 

 tail-hairs are tipped with rusty brown, while the extremity 

 bleaches to a pale colour. 



There is a good deal of variation in the yellow of the 

 back : in fresh pelage it is buff, but it becomes chamois- 

 coloured, and in very abraded examples disappears altogether. 

 The yellow of the sides of the face and neck and of the 

 throat is sometinns a little paler than elsewhere. 



Tijpe. — Adult female (skin and skull) collected on the 

 Langbian Peaks, South Annam, 6000 ft., on 22ud April, 

 1918. bv C. Boden Kloss. No. 3501, CBK. 



