64 Journal of the F.M.S. Musewms. IVior. Vad 
orange ferruginous, the hairs lighter below at their bases. 
Streaks from the ears orange buff, by no means conspicuous, 
beneath rusty ferruginous, a patch on breast and mesial line 
uniform, the rest with greyish bases to the hairs. 
Skull :—Smaller than that of 7. castanea, with the muzzle 
relatively shorter and blunter and the cranium less elongate. 
Palatal vacuities in both specimens available less defined than 
in the skulls of 7. castanea in the collection. Teeth not 
different from those of the typical form. 
Measurements:—Collectors external measurements (taken 
in the flesh):—. 
Head and body 172 (201); * Tail, 141 (151); Hindfoot, 38 
(42.5) mm. 
Cranial measurements: greatest length, 50°0 (54°0); basal 
length, 43°9 (46.3); palatal length, 26°7 (28:1)+; zygomatic 
breadth 24:9 (27°8); least interorbital breadth, r4°0 (15.0); 
cranial breadth, 20°0 (20.3); breadth of rostrum at diastema, 
6°8 (7°1); lachrymal notch to tip of premaxillaries, 20°8 (23°0); 
upper molar series, 18°0 (19°2). 
Specimens examined. Lhe type and an immature female, 
(canine and pi at alveolus from the same locality.) 
Remarks. The type specimen, though adult, is younger 
than the available series of seven skulls and four skins of T. 
castanea, from Pulau Bintang, having the orbital ring not 
completely ossified. It is however practically adult and has 
probably attained its full size. The other specimen is very 
considerably younger. Both are in somewhat worn pelage, 
while those from Bintang are in fresh, but I think it practically 
certain that the differences in colour will persist toa greater 
or less degree when specimens in similar condition are avail- 
able for study. The differences are certainly of no less order 
than have been used to establish the majority of races formula- 
ted of late vears. 
SCIURUS VITTATUS MAPORENSIS, subsp. nov. 
Type :—Adult female (skin and skull). Federated Malay 
States Museums No. 289/16, collected on the West side of 
Pulau Mapor, Rhio Archipelago, on June 6th, 1915, by H.C. 
Robinson. 
Characters: Most closely resembling the race from Pulau 
Tinggi but smaller, with the black lateral stripes, clearer and 
less sullied. Colour of the under surface varying from ochra- 
ceous buff through ochraceous orange to ochraceous tawny, 
whereas in the other races from the Rhio Archipelago the 
* Measurements in parentheses are those of an adult male of Tupata 
castanea collected at Sungei Biru, Pulau Bintang, June 12th, 1908. F.M.S. 
Mus. No. 1792/08. 
+ Measurements in parentheses are those of an adult female of Tupata 
castanea collected at Pasir Panjang, Pulau Bintang on June gth, 1908, F.M.S. 
Mus. No. 1790/08. 
