128 MILLER 



length 44 (43) ; basilar length 41 (41) ; palatal length 23 (23) ; palatal 

 width between middle molars 6 {6) ; greatest length of nasals 15 

 (14.8) ; greatest width of both nasals together 7.2 (7) ; interorbital 

 breadth 18.2 (17) ; mastoid breadth 23 (21) ; breadth of braincase 

 above roots of zygomata 24 (22) ; zygomatic breadth 30.4 ( 29) ; 

 depth of braincase at anterior edge of basi-occipital 17.8 (16. 8) ; man- 

 dible 29 (30) ; maxillary toothrow (alveoli) 9 (9) ; mandibular tooth- 

 row (alveoli) 9 (9). 



Specimens examined. — Seven, all from the type locality. 



Remarks. — In both size and general color this squirrel more closely 

 resembles the Bornean representative of the group than it does either 

 of the three forms from the South Natunas. Its relationships, how- 

 ever, appear to be rather with the race inhabiting Singapore Island 

 than with any of its near geographic allies, Sciurus latitensis excepted. 



SCIURUS LAUTENSIS sp. nov. 



1895. Sciurus notalus Thomas and Hartert, Novitates Zoologicae, 11, p. 

 491. December, 1895 (part, specimens from Pulo Laut). 



Type. — Adult female (skin and skull) No. 104683 U. S. National 

 Museum. Collected on Pulo Laut, North Natuna Islands, August 6, 

 1900. Original number 612. 



Characters. — Size slightly less than that of Sciurus rubidiventris 

 and color conspicuously pallid. Upper parts as in S. lutescens ; lower 

 parts nearly as in S. seraice but rather less dull ; pale side stripe much 

 less yellow than belly. Skull as in Sciurus rubidiventris. 



Color. — Upper parts and tail as in Sciurus lutescens. Cheeks 

 faintly washed with ochraceous-buff. Under parts and inner surface 

 of legs bright ochraceous-buff (distinctly more yellow than Ridgway's 

 pi. V, No. 10). Lateral stripes as in 6". hitescens (not distinctly yel- 

 lowish as in S. seraice)., but black band usually less sprinkled with gray. 

 Scarcely a trace of gray in axillary region or on sides of neck. 



Skull. — The skull in all respects closely resembles that of S. rubidi- 

 ventris except that it is slightly smaller. Its large size and the corre- 

 spondingly large teeth readily distinguish it from that of the South 

 Natuna species. 



Measurements. — External measurements of type : total length 375 ; 

 head and body 195 ; tail vertebrae 180; hind foot 44 (41). Average 

 and extremes of nine specimens from the type locality ; total length 

 3^3 (355~379) ; head and body 1S9 (171-196); tail vertebree 170 

 (165-183) ; hind foot 45 (44-46) ; hind foot without claws 42 



(41-43)- 



