t^a Lloyd's natural history. 



from a single central point about half or three-quarters of an 

 inch behind the eyebrows; posteriorly these hairs are much 

 lengthened, as are those on the occiput, the latter being 

 directed forwards and upwards in such a way that the black 

 hairs of the forehead and the brown ones of the occiput meet 

 to form a high crest on the crown. (^Oldjield Thomas and 

 Hart erf, i.e.). 



Young — Messrs. Oldfield Thomas and Hartert describe a 

 new-born specimen as follows : *' Middle hne of dorsal surface 

 from crown to anus, and whole of tail, deep black, the breadth 

 of the black on the back being about an inch and a half; the 

 outer sides of the shoulders greyish, and also the backs of the 

 hands and feet commencing to become black. The whole of 

 the rest of the animal, including the forehead, arms, and legs, 

 wholly pure white." 



"Although among the many closely allied species of Semno- 

 pithecus it is difficult to be at all sure of their mutual affinities, 

 it would seem that S, natimcB is most nearly related to S. 

 femoralis, Horsf., and S. siame?isis, M. and S. Both of these 

 have a similar arrangement of the hairs on the crown and nape ; 

 and, on the other hand, the former possesses the wholly black 

 hands, feet, and tail of S. natunce, and to a certain extent the 

 browner tint of the back, while, on the other, S. siamensis has 

 its whitish under side and light thigh-patch, although united 

 with a widely different coloration." 



Habits.— Mr. Everett gives the following note : "Native name 

 * Kekah,' which is onomatopceic. These animals were common 

 about the base of Mount Ranai, going in troops, and they com- 

 mit great depredations on the native gardens. The irides are 

 light cinnamon-brown ; face livid black, the eyelids and muzzle, 



