188 CLASS MAMMALIA. 



The Bokkol is a rare animal in Java, and probably so 

 also in Sumatra. 



Another species, the Sciurus Affinis, is described by Sir 

 Stamford Raffles. The upper parts are fulvous-brown, with 

 a cast of gray ; it is variegated with delicate transverse bands. 

 The white of the head, the under-parts throughout, and the 

 extremity of the tail, are gray. This latter organ is cylin- 

 drical, somewhat distended in the middle, and then tapering 

 to a point ; the transverse bands are irregular between the 

 sides and abdomen ; a stripe of reddish-brown intervenes, 

 which is continued to the neck. The whiskers consist of 

 black and white hairs intermixed. The ears are rounded 

 above, and without any brush-like appendage. The length 

 of the body and head is nine, and of the tail, seven inches. 



Sir Stamford Raffles discovered this species in 1819, in 

 the woods of Singapore. 



The Sciurus Tenuis is described by Dr. Horsfield. The en- 

 tire length of the body and head is fiveinches and a half, and 

 of the tail, five inches. It differs from the Affinis in size, 

 and in having generally a darker tint. The colour above is 

 uniformly and delicately variegated with dark, tawny, and 

 blackish-brown ; towards the sides, the tint becomes ful- 

 vous, with some lustre, but no defined line or streak is ap- 

 parent. The sides of the head and neck have the same co- 

 lour. The under part of the neck and abdomen, and the 

 extremities interiorly, are pale yellowish-gray, with a slight 

 tint of fulvous. The tail above is gray, with obscure black 

 bands, and irregular tawny specks ; it has the same form 

 as the Sciurus Affinis, being narrow at the base, broader in 

 the middle, and terminated by a long attenuated grayish 

 tuft, which is obscurely banded with black. The separate 

 hairs covering the tail have a band of a fulvous colour 

 at the base, of black in the middle, and gray at the extre- 

 mity. 



