10 PRIMATES, CARNIVORES AND UNGULATES 



are concolorous, the fore limbs being paler on the inner sides. 

 Base of fur greyish white throughout except on crown and 

 back. Only the pale grey and sooty areas are unspeckled, the 

 grizzling being very marked across the shoulders. Head and 

 body about 21 inches, tail 8 inches. 



Females generally resemble the males but are much 

 smaller, the dark areas are less intense and sharply margined, 

 the annulations, except across the shoulders and on the sides, 

 are very indistinct and there is no pale border to the callosities. 



Mr. G. S. Miller in his paper on " The Monkeys of the 

 Macaca nemestrina group," (Proc. U.S. Nat. Mus., Vol. XXIX, 

 p. 555-563) has separated Tenasserim animals from the typical 

 Sumatran form under the name of Macaca aditsta. 



His characters for the latter are : — fur distinctly annulated 

 back so little darkened that the blackish tail forms a con- 

 spicuous contrast, noticeably paler than sides and thighs, 

 canines not excessively heavy, skull broad. 



In Macaca nemestrina typica the fur is either not annulated 

 or indistinctly so, the back so dark that the blackish tail forms 

 no noticable contrast with it, buttocks not noticeably paler than 

 sides of thigh, canines excessively heavy and skull elongate. 



The Peninsular animal as represented in specimens from 

 the F.M.S. agrees with neither of these. In the concolorous 

 back and tail it approaches M . nemestrina while in the strongly 

 annulated fur and pale buttocks it agrees with M. adusta. 



Skull and teeth however exactly resemble those of 

 M. nemestrina from Sumatra as figured and cited by M. Miller 

 except that the condylo-basilar, basilar and palatilar lengths 

 are a little greater. Because of this and because I don't wish 

 to make another geographical race out of the local representa- 

 tive of a group in which I think there is much individual 

 variation, I have kept the older name for the Peninsular 

 animal. It is possible however that the other form will also 

 be found to occur in the northern districts of our area. 



Jour. Straits Branch 



