510 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



Color. — Upper parts of head and body, a fine grizzle of black and 

 ochraceoiis or ochraceous-buff, both colors about equally mixed, the 

 ochraceous being somewhat paler over the shoulders than elsewhere, 

 and darkest jjosteriorly and in the region of the thighs; ujjper sur- 

 face of the tail very similar to upper surface of head and body in 

 color, but the grizzling is coarser and in certain lights the tail ap- 

 pears finely annulated ; outer sides of thighs and arms similar to back, 

 but with finer grizzling and the ochraceous predominating; upper 

 surfaces of feet dull ochraceous darkened by the blackish bases of 

 the hairs showing through ; light side-stripe, about 55 by 5 mm., be- 

 tween buff and ochraceous-buff; dark side-stripe, about 50 by 7 mm., 

 blackish finely sprinkled with ochraceous-buff"; underparts and inner 

 side of fore and hind legs a color something between Ridgway's 

 ochraceous-buff and ochraceous-rufous ; underside of tail a very coarse 

 grizzle of blackish and ochraceous, the latter color predominating 

 in the middle line; inner side of ears and an orbital ring, the lower 

 half of which is most pronounced, ochraceous-buff; outer side of ears 

 similar to adjacent parts of head; cheeks and base of whiskers similar 

 to rest of head, but grizzle yery fine and the ochraceous-buff pre- 

 dominating. 



Skull and teeth. — These show no special peculiarities; the audital 

 bullse and teeth, however, are smaller than they are in the majority 

 of species of squirrels of the vittattis group. 



Measureinents. — External measurements taken by collector: Head 

 and body, 190 mm.; tail vertebra?, 18-2; hind foot, with claws, 49. 

 Cranial measurements : Greatest length, 4C.4 ; basal length, 39 ; zygo- 

 matic breadth, 2G.7 ; interorbital constriction, IG ; mandible, front of 

 symph3^sis to back of condyle, 29.5; maxillary toothrow (alveoli), 

 9.2; mandibular toothrow (alveoli), 8.7. 



Specimens examined. — One., the type. 



Remarks. — Compared w^ith its geographical neighbor, Sciurus ab- 

 hottii Miller," of Big Tambelan Island, S. director is conspicuously 

 more ruddy throughout, being ochraceous or ochraceous-rufous where 

 S. ahhottii is only buffy or ochraceous-buff. Among the forms of the 

 S. vittatus group of squirrels in the National Museum S. tedongus 

 Lyon,'' from the island of Banka, most nearly resembles S. director., 

 but is less ruddy, except on the belly, Avhich has about the same color 

 in the two species. 



iProc. Wash. Acad. Sci.. II. p. 224, August 20. 1900. 



6 Proc. U. S. Nat. Mus., XXXI, p. 591, December IS, 1906. 



