218 EODENTIA. 



is blackisli-browii, only slightly and sparsely tipped with yellowish on the sides. 

 The under sirface of the tail is brown, the hairs with yellow tips. The chin to the 

 vent, the inside of the limbs and anterior surface of the fore limbs, are rich 

 yellow-white, the wliite spreading externally on the fore limbs above the wrist, 

 but not encircling the hmbs. The feet are black. The cheeks, below the eye, 

 are concolorous with the throat. 



I have observed another type of colour in a squirrel the locality of which is 

 unknown, bxit which agrees with the Javan race in its pale head and nearly yelloAV 

 tail. The head is yellowish-brown, only slightly darker than the imder parts. The 

 back of the neck, the shoulders, outside of the fore limb, and the rump and out- 

 side of the hind limb, are blackish-brown ; the feet black ; but the rump and liind 

 quarters are sparsely white-grizzled. The rest of the tipper surface of the trunk is 

 rather rich chestnut, grizzled on the lower margin of the sides, where the colour, as 

 it joins the white, becomes blackish-brown. The chin, the cheeks, and under parts 

 are yellowish- white ; the middle of the outside of the Kmb is white- grizzled; the 

 root of the tail is concolorous with the rump, and the remainder is yellowish. In 

 young individuals, the fur is darker and more riclily coloured, the upper surface of 

 the head being concolorous with the back. The hind quarters and the outside of 

 the hind Hmbs and shoulders, and the outside of the fore limbs, are black, the first 

 being slightly white- grizzled ; the intervening portion of the trunk reddish and 

 black, with which the rest of the tail is concolorous. The under parts are yellowish- 

 wliite, and this colour extends on to the front of the wrist. 



The type of S. albiceps is nearly as pale as ^S*. hypoleucus, but the hind limbs are 

 dark brown, and also the fore feet and the proximal two-thirds of the tail, but the 

 head and neck are pure white, and also the inside of the front of the lower half of the 

 limbs. The under parts are pale-yellowish, as in S. hy^Joleucus and S. auriventer, 

 and the last third of the tail is broadly washed with yellow. In others, the head is 

 wlutish, wliile the body and Hmbs are dark brown and slightly grizzled with yellow 

 and white; the front of the fore legs being whitish, but aU the rest of the Hmbs, dark 

 brown. The base of the taU is dark brown, washed with whitish, and in aU the 

 remainder of its extent it is broadly washed with yellow. 



The 8. hypoleucus, Horsfield, like S. auriventer, Is. Geoff. St.-HH., was 

 obtained from Sumatra, and both of these correspond to squirrels referred by 

 Horsfield to a variety of S. bicolor, which he called sondaica. Squirrels of 

 tins variety {sondaica) have been obtained from Java, Sumatra, Borneo, Malacca, 

 and Siam. They vary from almost pure white to rich, dark, rusty brown, generaUy 

 with pale heads, white or yellow before and between the eyes, on the sides of the 

 face and neck, and on the front of the margin of the tliigh at the o-roin : the 

 outer surface of the extremities and the upper surface of the tail being concolorous 

 with the upper parts of the body. The back is sometimes darker than the Hmbs in 

 the dark forms and lighter than them in the pale forms, such as ;S'. Mjpoleucus and var. 

 sondaica. The under surface and the inner side of the Hmbs and the lower surface 

 of the tail in the middle line, vary from pure white to yellow and yellowish-red, 



