1 6 SMITHSONIAN MISCELLANEOUS COLLECTIONS [voL. 45 



Cranial measurements of type : greatest length, 34.6 ; basal length, 

 28.4 (28) ;^ basilar length, 26.8; diastema, 8.4 (8) ; length of nasals, 

 10 (9.8) ; greatest breadth of both nasals together, 5 (5.3) ; inter- 

 orbital breadth, 11.8 (12) ; zygomatic breadth, 19.6 (20.3) ; man- 

 dible, 21; maxillary toothrow (alveoli), 5.8; mandibular toothrow 

 (alveoli), 6. 



Specimens examined. — Six, all from the Pagi Islands. 



Remarks. — Although closely related to the Sciuriis fraterciilus of 

 Sipora Island, this squirrel is distinguishable by its less dwarf size 

 and by the absence of rufous tints on sides and upperparts. 



SCIURUS LANCAVENSIS sp. nov. 



1900. Sciurus concolor Miller, Proc. Biol. Soc. Washington, xiii, p. 

 191, December 21, 1900. Part, specimens from Pulo Lankawi. Not 

 5". concolor Blyth. 



Type. — Adult male (skin and skull). No. 104,390, United States 

 National Museum. Collected on Pulo Lankawi, off west coast of 

 Malay Peninsula (about 75 miles north of Penang), December i, 

 1899, by Dr. W. L. Abbott. Original number, loi. 



Characters. — Like Sciurus davisoni (Bonhote) but smaller and 

 with scarcely a trace of the reddish areas on neck and sides. 



Color. — Type : back and sides a uniform grizzle of black and a 

 brown intermediate between the buff and cinnamon of Ridgway, the 

 lighter color somewhat in excess. Face, legs, and feet a finely 

 grizzled gray approaching in general effect the hair-brown of Ridg- 

 way and forming a distinct though not very striking contrast with 

 color of back. Neck with a barely indicated reddish area behind 

 and below ear. Ears slightly more gray than back. Underparts 

 dull gray much like that of legs, but distinctly washed with broccoli- 

 brown on middle of belly. Tail concolor with back above, slightly 

 paler below, the grizzle everywhere more coarse and forming obscure 

 cross-bars beyond middle ; pencil clear black, equal to about one- 

 sixth entire length of tail. 



Skull and teeth. — As compared with that of Sciurus davisoni the 

 skull of S. lancavensis is noticeably smaller and the rostrum is 

 relatively shorter and broader. Teeth essentially as in 6^. davisoni. 



Meastirements. — Measurements of type : total length, 410 ; head 

 and body, 210; tail vertebrae, 200; hind foot, 51 (47.5); skull. 



' Measurements in parenthesis are those of one of the cotypes (adult male) 

 of Sciurus fratercidus, taken from the original description. 



