TUPAIIDiE. 133 



the most observable is the greater size of the first as compared with the second 

 incisor — a peculiarity which separates it from other Tupaice. In the upper molar, 

 which is smaller than that of T. ferruginea, the cusps are only feebly developed, 

 and the two following molars have their inner talon flattened instead of being 

 cuspidate, as in T. ferrnginea, and the anterior external cusp of these teeth is not well 

 indicated, and the teeth generally are smaller. In the lower jaw the first molar is 

 more flattened than in T.ferruginea, and the cusps but little developed, and the two 

 anterior cusps of the antecedent molars are all but absent, and the inner and 

 anterior pair of cusps are less prominent than in T.ferruginea. 



The tail of the animal is less than the length of the body and head, and is 

 blackish chestnut and in strong contrast to the tail of T. ferruginea, which is, so to 

 speak, of a blackish olive, while the tail of T. tana may either be rich chestnut 

 red or deep black. As in the latter, the fur is especially shining on the flanks and 

 rump. Dr. Gray describes the species as follows : — 



"Fur dark brown, blackish washed. Tail dark red-brown, pale red beneath, 

 longer than the body and head ; the shoulder strata yellow ; no bands between the 

 shoulders. The head conical, about twice as long as wide behind." 



The head is large, compared with the size of the body ; the ears rounded, with 

 several ridges on the conch, and a well-developed convex tragus not unlike the 

 human ear. 



The palm and soles are bald to the wrist and heels. The skull resembles the 

 skull of T. ferruginea in the character of its facial portion. 



This form inhabits Borneo. 



Measurements of skull of T. splendidula, Gray : 



Inches. 

 Posterior margin of orbito-parietal ridge to tip of premaxillaries ...... 2'00 



Greatest breadth across zygomatic arch ........... 1 



„ „ „ parietals ............ 



Breadth at lachrymal notch 



Lachrymal notch to tip of premaxillaries .....-..•• 



Breadth at canines 



„ „ second incisors ........■••■ 



„ „ first „ 



„ „ orbital angle of frontals 



Least breadth between orbits 



Posterior palatine margin to tip of premaxillaries 



Greatest breadth between alveolar surface (external mirgin) between second and third molars ? 



Breadth (external) half-way between posterior incisor and canine '26 



Length of alveolar border ■'■""*' 



Depth of premaxillary surface to anterior extremity of nasals ..■•■•• — 



„ „ „ posterior „ „ . - *'-' 



„ through posterior margin of palate ....••••■• 

 „ „ highest point of parietal ....•••■■' 



Anterior extremity of symphysis to extremity of angular process of lower jaw ■ • . i o7 



condyle ^'^^ 



„ „ „ „ coronoid process . ■ ■ ■ ■ . i oo 



Length of alveolar surface °" 



Depth through coronoid process "" 



„ from base of corono-condyloid notch «'■* 



17 

 76 

 65 

 81 

 35 

 26 

 19 

 60 

 57 

 04 



