74 



MILLER 



down the middle by the narrow, sharpl}' defined line formed by the 

 short bister hairs with which the median ventral surface of the tail is 

 clothed. Inner surface of legs concolor with belly but much tinged 

 with the color of the svn-rounding parts. This is especially the case 

 with the hind legs. In bleached pelage the drab areas of the fur 

 are faded to a pale dirty buff, strikingly different from the color of the 

 fresh coat, but the cinnamon lateral band and the hair brown cheeks 

 remain unchanged. 



Skull. — Though the skull of Ratitfa affinis is much below the 

 maximum size of members of its genus it differs from the others in 

 minor details only. The nasal bones are distinctly expanded poste- 

 riorly, that is the width of the two together along naso-frontal suture 

 is considerably greater than it is at a point about 5 mm. further for- 

 ward. This character alone is sufiicient to distinguish the species 

 from Ratufa gigantea and R. ?nelanopcpla. Pterygoids short, the 

 length of the interpterygoid fossa not twice as great as the width at 

 middle, instead of much more than twice, as in the related species. 



Teeth. — The teeth are of the same form and relatively of the same 

 size as in R. gigantea and R. melanopepla. 



Measic7-eme7tts. — External measurements of an adult male topotype 

 (no. 86886): total length 711; head and body 330; tail vertebrae 

 381; pencil, 75; hind foot 77 (70). A second specimen (also a 

 topotype, (no. 86887): total length 686; head and body 305 ; tail 

 vertebrae 381 ; pencil, 90; hind foot 78 (73). 



Cranial measurements of adult male: greatest length 61; basal 

 length 52; basilar length 49 ; palatal length 34 ; length of nasals 19. 8 ; 

 breadth of nasals anteriorly 12 ; breadth of nasals posteriorly 10; least 

 breadth of nasals 6.6 ; interorbital breadth 26 ; breadth between tips 

 of postorbital processes 37 ; zygomatic breadth 39 ; mastoid breadth 

 29 ; brcadtli of palate between premolars 8.4 ; depth of rostrum at 

 posterior extremity of nasals 17.4; mandible 37; depth of mandible 

 at posterior root of premolar 10.4; least depth of mandible between 

 incisors and premolar 8; maxillary toothrow (alveoli) 12.8; breadth 

 across both upper incisors together at rim of alveoli 8; mandibular 

 toothrow (alveoli) 14. 



Specimens exa7ni?icd. — Two, both from the type locality. 



Remarks. — In tlie absence of Javan and Sumatran material it ap- 

 pears preferable to use the name a(ll)iis for this squirrel rather than 

 attempt to apply to it one of the earlier names based on animals of the 

 same general size and color. In a group so plastic as the genus 

 Ratufa the chances that any one form occurs in both Ja\a and the 



