896 JOURNAL, BOMB A T NATURAL HISTORY SOCIETY, Vol. XIX. 



19. Ratufa affinis auriventer^ Is. Geoff. 



1831. Scmrus auriventer. Is. Geoffroi, Voy. Bel. Indes, p. 151. 



Colour. — General colour tibove as in a-^nis ; below tawny ochraceoas 

 of flanks, extending downwards and replacing white of affi,nis. Thigh 

 patch buffy white. Tail coloured above like the back ; below, at least 

 medially, white. Hands and feet coloured like the belly. 



Skull. — As in affinis. 



Dimensions — As in affinis, 



Sxinonymy. — The name auriventer was based on a specimen said to 

 have been brought from Java by M. Diard, who also collected in the 

 Peninsula. In other cases it has been found that there has been con- 

 fusion in assigning the true locality to specimens collected by him. 

 Nothing resembling the description of auriventer has been found in 

 Java, while on the other hand it very well fits the present form, and 

 I follow Bonhote (A. M. N. H. 1900, p. 495), therefore in accepting 

 the name for this form. 



Habitat. — All the specimens in the National Collection are labelled 

 " Malacca," and, as the next form is found in Selangore and thence 

 northwards as far as Trong in Lower Siam, this must mean the 

 Island of Malacca. 



20. Ratufa apnis pyrsonota, Mill. 



1900. Ratufa pyrsonota, Miller. Proc. Wash. Ac. Sc. II., p. 75. 



Colour, — General colour above grizzled ochraceous, individual 

 hairs slate grey at base ; below clear ochraceous. This is in fact a very 

 ochraceous coloured form of afinis, with very dark brown feet. 



Skull. — As in a-ffini.'^, but larger. 



Dimensions. — Head and body, 350; tail, 400; hindfoot 75. 

 Skull : greatest length, 65 ; basilar length, 51 ; zygomatic breadth, 

 41 ; nasals, 21 ; diastema, 16 ; braincase breadth, 32 : interorbital 

 breadth, 26 ; upper molar series, 13. 



Distribution. — The type locality is Trong in Lower Siam, but it 

 extends as far South as Selangoie. 



