MAMMALS OF BORNKO. 9 



and limbs. A ycllo\\- stripe on the shuuldcro. The hair on the 

 sides of the face, neck, and shoulder is long and of a yellowish 

 tint variegated with reddish brown, and the chin is well bearded. 

 The under parts are yellowish white, and the tail is tufted. 

 The face is a dirty \-el!ow merging with the white around the 

 lips. The under surfaces of the extremities are blackish, and 

 the ears are of the same colour, and small. Nose produced into 

 a proboscis with large nostrils opening downwards and separated 

 from each other by a septum, but only developed in its 

 characteristic form at a very advanced age in both sexes, being- 

 much shorter in the young and turned upwards (.S'. rrciirrus, 

 Vig-. and Horsf.). The eyes are rather wide apart ; the neck 

 short, and the throat rather swollen from the presence of a 

 laryngeal sack. 



The colours of both sexes are the same, but the feniale i.s 

 smaller than the male. The colour as it advances in age is the 

 subject of considerable change. In early youth the mouth and 

 the area around the eyes are bluish, and the cheeks are 

 curiously wrinkled, and the rest of the face is sullied brownish 

 white, and the ear flesh coloured, but intensely black around 

 the margin. The hands are black ; and the head with the 

 exception of the crown, the neck, the upper part of the crest, 

 and the front of the upper arm, are dark red-brown, the rest of 

 the pelage being sullied, pale-yellowish brown. Through a 

 series of changes during which the red-brown of the upper parts 

 first increases in strength, and the grey brown of the hips and 

 upper side of the tail change to yellowish white, the adult 

 pelage is reached. 



ft. in. 



Length of adult, muzzle to base of tail 2 5 



Length of tail 2 2 



This peculiar form, which has all the structural characters 

 of Scmuopit/iccus, appears to be restricted to the island of 

 Borneo. The native name is " Rasong," and it is usuall}- 

 found near the mouths of rivers in the Southern part of 

 Sarawak. 



Hab. Sarawak (G. D. Haviland). Batang Lupar (C. Hose). 



GEN U S S-E I\{ K IM 1' H E C U S . 



SEMNOPITHECUS RUBICUNDUS. 



Se77inopit/ieciis nihicuiidus^ Muller, Tijdsh. \-oor natuur, 

 Gesch. vol. v. pts. i. and ii., 1838, p. 137 (plate). 



In the type of this species, all the animal is deep chestnut 

 red, with the exception of the hands and feet, which are sullied 

 with blackish. The hair on the frontal region is markedly 

 radiated in all directions, that in front overshadowing the eyes, 



