KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 60- N:0 6. 



13 



colours more vivid. The brightness of the colour raay, however, only be seasonal 

 as the whole series vvas obtained at September to November while the Kaboreau-spe- 

 cimen was shot at the beginning of January. 



It may, however, be possible that the Island of Borneo is inhabited by some 

 different races of Proboscis Monkey, as this is the case with several other equally 

 variable species of Mammals, but until more material from Eastern Borneo has been 

 available for examination it seems the present author wisest not to give the Pro- 

 boscis Monkey from Eastern Borneo a distinct name. 



Textfig. 2. Nanalt8 larvatua Wubmb. q" (No. 14) Toembaiig Muroewe, Central Borneo, Sept. 1915. Nat. size. 



To show shape of palate. 



The external measurements taken in the flesh by the collector has only been 

 noted in the Kaboreau-specimen and are as follows: head and body: 723 mm., tail: 

 736 mm., hindfoot: 238 mm., ear: 34 mm. 



6. Macaca irus irus F. Cuvier. 



Mém. Mus. d'Hist. Nat. Paris IV, 1818, p. 120. 



§ Long Pangian, Boelongean, Eastern Borneo 24 /i 1914. n Head and body: 414 mm. Tail: 512 mm. 

 Hindfoot: 124 mm. Ear: 39 mm. 



This specimen most certainly has to be referred to the same race which in- 

 habits the mainland of the Malay Peninsula. As compared with a female specimen 

 collected in Perak, the Bornean animal seems to be slightly darker on the upper 



