18 GYLDENSTOLPE, ON A COLLECTION OF MÄMMÄLS MADE IN EASTEUN AND CENTRAL BORNEO. 



produced by irregular mixtures of yellowish vvhite, black and brownish. Individual 

 hairs blackish at base then whitish blending to pinkish. Next to this colour a blackish 

 brown area followed by a yellowish brown tip. Whole head, sides of the head and 

 neck, chin and throat olive grey intermixed with some yellowish brown hairs most 

 conspicuous on the crown. Below the eye a large white spöt. Flying membrane 

 dark chestnut with the outer margins pure white. Along the sides of the body a few 

 white döts most conspicuous and largest on the posterior part of the shoulder. Ge- 

 neral colour of underparts, except chin and throat, varying mixtures of »apricot 

 buff» and clay colour. Lower parts of flying membranes dark chestnut. 



Description of immaiure speciwen: Head, sides of the head and neck, chin and 

 throat as in the grey phase but everywhere more intermixed with buffy hairs 

 making the grizzling more conspicuous. Below the eyes a whitish area. On the top 

 of the snout and some distance in front of the eyes two white spöts. Crown of 

 head with a few white spöts. Behind the ear a buffy spöt composed of longer 

 hairs. Middle parts of back greyish white with some irregular narrow transverse 

 Ii nes of black spreading out över the sides of the back where they become i lide- 

 fined. General colour of the sides of the back and inner parts of the flying mem- 

 branes tawny olive intermixed with black most conspicuous on the membranes. The 

 sides of the back, the flying membranes, the arms, the legs, the hands and the feet 

 are spotted with white, these spöts being largest along the sides and on the forearms. 

 Outer margin of flying membrane white. Interiör of this the flying membrane be- 

 comes tawny chestnut intermixed with yellowish brown hairs. Lower parts of the 

 body except chin and throat vinaceous cinnamon. Middle parts of belly brownish 

 fawn intermixed with longer yellowish hairs. A few white spöts along the outer 

 margin of the flying membrane when seen from below. 



Skull measurements : 



Greatest length of skull 



Condylobasal length of skull 



Basicranial length of skull 



Occipitonasal length of skull 



Zygomatic width 



Greatest width of braincase 



Least iuterorbital breadth 



Least postorbital breadth 



Greatest orbital breadth 



Depth of zygomata 



Lateral palatal length 



Distance from orbit to tip of premaxillare • 



Length of nasals mesially 



Basioeoipital breadth 



Length of upper toothrow 



Length of three upper molars 



9 



9 Type 



No. 4880 



No 24 



67,8 



67,3 



63,9 



65,4 



59,6 



60,5 



60,5 



66,8 



40,2 



41,6 



24,9 



26,5 



18,3 



17,5 



22,2 



23,7 



43,6 



41,0 



4,8 



4,7 



31,9 



31,9 



29,0 



30,0 



228 



24,6 



5,5 



5,5 



31,7 



32,8 



8,2 



8,7 





