222 



MILLER 



Skull. — The entire skull of Sciurus tenuirostris (fig. 13, c) is nar- 

 rower than that of S. notatus irovn. Singapore (fig. 13, a), but the dif- 

 ference is most strikingly apparent in the rostrum. The greatest width 



Fig. I- 



;.^ notatus. b S. klossi. c S. tcnuiroilrii. Natural size* 



of both nasals together Is more than half of nasal length in S. notatus^ 

 while in S. teriuirostris it is contained in nasal length nearly two and 

 one-half times. Viewed from beneath the sides of the rostrum are 

 seen to be much more contracted in S. tenuirostris., so that a distinct 

 ridge extends from incisive foramina to henselion. The palate also is 

 much narrower than in S. notatus. Teeth as in S. ?iotatus. 



Measureinents. — External measurements of type: total length 356; 

 head and body 191 ; tail vertebrai 165 ; pencil 50; hind foot 43 (40.4). 

 A second specimen ( 9 No. 101754) : total length 362 ; head and body 

 191 ; tail vertebras 171 ; pencil 55; hind foot 43 (41). 



Cranial measurements of type : greatest length 50 (51)' basal length 



' Measuremeuts iu parenthesis are those of au adult female Sciurus notatus 

 from Singapore. 



