128 Mr. O. Thomas on two neio Squirrels from Borneo. 



Teeth : incisors narrow, strongly convex in front, orange 

 above, nearly white below ; premolars ^, the anterior upper 

 minute, circular in section. 



Dimensions of a skin : — 



Head and body 90 millim. ; tail, without hairs 53, with 

 hairs 87 ; hind foot, without claws, 24*5 ; ears, without hairs 

 7, with hairs 28. 



Skull : tip of nasals to centre of fronto-parietal suture 

 ("bregma") 20 millim. ; length of nasals 7*5 5 interorbital 

 breadth 12; palate, length 12; length of upper tooth-series 

 4-1. 



I have much pleasure in naming this most beautiful and 

 interesting little squirrel after its discoverer. 



Sciurus Jentinhij sp. n. 



General colour of upper surface yellowish grey, strongly 

 suffused with orange on the head and along the centre of the 

 back. Hairs dark slaty grey for four-fifths of their length, 

 their tips yellow or orange. A spot in front of, and a distinct 

 ring round, each eye white. Ears extremely short, rounded, 

 their edges clothed with very short white or pale yellow 

 hairs, contrasting markedly with the dark colour of the sides 

 of the neck, where, just behind the ears, thei'e is a distinct 

 darker patch, owing to the suppression of the yellowish tips 

 to the hairs, and consequent showing through of their slaty 

 bases. Chin, chest, and belly pale yellowish white, the bases 

 of the hairs grey. Tail-hairs comparatively short, only about 

 10 or 12 millim. in length, except just at the tip ; broadly 

 ringed with black and deep orange, their tips white. 



Skull as in ;S^. tenuis. 



Incisors dark yellow above and below ; premolars ^ ; molars 

 rather smaller and lighter than in S. tenuis. 



Dimensions (skin) : — 



Head and body 140 millim. ; tail, without hairs 103, with 

 hairs 136; hind foot, 32*5; ears, above crown, 4. 



Skull : tip of nasals to bregma 25, greatest breadth 20 ; 

 length of nasals 9'5 ; interorbital breadth 11*8; palate, 

 length 16*6 ; length of upper tooth-series 6"4. 



This species is most nearly allied to 8. tenuis^ Horsf., of 

 which there is a large series in the l^atural-History Museum. 

 It differs, however, by its much paler orange-washed back, pro- 

 minently white-rimmed ears, the dark patches behind the latter, 

 and by its less bushy tail. It is noticeable also that the 

 Bornean specimens of 8. tenuis are much darker in colour, and 

 therefore still less like 8. Jentinki than are- those from the 



