l8 MILLER 



Measurements. — External measurements of type : total length 

 241; head and body 152; tail vertebrae 89; pencil 30; hind foot 45 



(40. 



Speciinen examined. — One, the type. 



Retnarks. — Although the only specimen of this squirrel is imma- 

 ture (crown of last upper molar at rim of alveolus) its characters 

 appear to be quite sufficient to separate the Anambas form from that of 

 the mainland. It is probably more closely allied to the much brighter 

 colored Fu7iajnbulus diversus (Thomas) of Borneo. 



SCIURUS MIMELLUS sp. nov. 



Type. — Adult male (skin and skull). No. loi 668 United States 

 National Museum. From Pulo Wai, Tambelan Islands. Collected 

 August 13, 1899. 



Characters. — A miniature of Sciurus prevostii (hind foot about 

 53 instead of 63, greatest length of skull 51 instead of 58). 



Color. — Entire tail, dorsal surface of head and body, and outer sur- 

 face of hind legs glossy black to base of hairs. Underparts, feet, 

 inner side of hind leg, and entire fore leg bright reddish chestnut 

 (brighter than Ridgway's pi. IV, No. 9) fading to cinnamon-rufous 

 on thighs and to light orange-rufous on outer side of upper arms. 

 Black of back separated from red of belly by a lateral band of white 

 beginning just behind axilla and extending down front of hind leg to 

 knee and about 12 mm. wide at middle. Cheeks, chin and sides of 

 neck grizzled bluish gray. Sides of muzzle whitish. Whiskers and 

 ears black. The fur of the red area is everywhere red to base except 

 on sides, close to white stripe. Here it is blackish beneath the sur- 

 face. 



Skull. — Except for its smaller size the skull of Sciurus mimcllus 

 exactly resembles that of S. prevostii. 



Measurements . — External measurements of t3^pe : total length 451 ; 

 head and body 229; tail vertebras 222; pencil 60; hind foot 55 (51). 

 A somewhat younger individual (female) from the type locality : 

 total length 442 ; head and body 222; tail vertebrce 210; pencil 60; 

 hind foot 54 (51). 



Cranial measurements of type: greatest length 51.6 (58'); basal 

 length 43.6 (52); basilar length 40.6 (48.4) ; palatal length 22.8 (26) 

 length of nasals 15 (19); breadth of nasals anteriorly 72 i^-^) 

 breadth of nasals posteriorly 4.4 (5) ; interorbital breadth, 18.4 (24. 8) 



' Measurements in parenthesis are those of an adult female Sciurus prevostii 

 from Troug, Lower Siam. 



