III. ON AN ABERRATION OF SCIURUS PREV0ST1 

 FREVOSTI FROM SOUTH WESTERN PAHANG. 



By Herbert C. Robinson, C.M.Z.S. 



Three races of the handsome Raffles squirrel are re- 

 cognizable in the Malay Peninsula, two very distinct, and the 

 third somewhat indefinite both in range and characters. 



These are 



Sciurus prevostii prevostii, Desm. 



Desm. Mamiu. p. 335 (18221. 



Range. The Southern portion ot the Malay Peninsula not 

 north of a line drawn from the northern border of the territory 

 of Malacca to Kuala Kurau on the Pahang River. 



This form is at once distinguishable by having the white 

 side stripe continuous from ankle to ear over the shoulder. 



Sciurus prevostii wrayi, Kloss. 



Kloss, Joum. Fed. Malay States Mus. iv, p. 148 (,1911). 



Range. From the Siamese Malay State of Trang, through 

 the districts of Selama and Temengoh in northern Perak and 

 across the main range of the Peninsula to the headwaters ot 

 the Pahang and Tahan Rivers. Range northwards on the 

 east side of the Peninsula not yet determined. 



This form is separable from the other two by having a 

 wash of ochraceous fulvous on the shoulder, thereby breaking 

 the continuity of the white lateral stripe. In the next race 

 this wash is almost as deep in colour as the feet. 



Sciurus prevostii humei, Bonhote. 



Bonhote, Ann. and Mag. Nat. Hist. (7) vii, p. 170 (1901). 



Range. Central and Southern Perak to the south of 

 Selangor. 



In this form the ochraceous chestnut of the shoulder is 

 broadly in contact with the black of the back. 



Of the first race, Sc. p. prevostii, the Federated Malay- 

 States Museums, possess a series of skins from Nyalas, 

 Malacca, which are practically topotypes of the species and 

 call for no special remark. They have the hands and feet 

 chestnut, the extremities of the fingers and toes sometimes 

 rather paler, tending to orange buff, while in one case the feet 

 near the ankle are clad with speckled black and grey hairs 

 mingled with the chestnut, though this colouring is not sym- 

 metrical. 



