234 PITHECUS 



mandible, broad and low, angle of anterior edge nearly upright, 

 curving backward at top. 



Color. Narrow black line formed of long stiiT hairs on forehead ; 

 top of head, nape and hind neck tawny, slightly duller on upper parts 

 of body, the hairs being purplish on basal half, then banded with tawny 

 ochraceous, this giving the dominant color ; eyelids flesh color ; face 

 covered with short white hairs; sides of head covered with long olive 

 gray hairs, projecting forward in form of a semicircle from the ear, 

 and meeting the grayish white hairs from the temples and cheeks, 

 which run backwards and form an upstanding ridge; outer surface 

 of arms and thighs olive gray speckled with yellow ; legs, hands, and 

 feet olive gray ; inner side of limbs, and under parts silvery gray ; tail 

 brownish black above, grayish brown beneath. 



Measurements. Total length, 1,300; tail, 600; foot, 125. Skull 

 occipital region gone; Hensel, 86; breadth of orbits, inner rim, 48.1 

 length of rostrum, posterior end of nasal to base of incisors, 48.7 

 breadth of rostrum posteriorly at alveolar border, 36.2 ; median length 

 of nasals, 20.3 ; palatal length, 44.4 ; length of upper molar series, 31.8 ; 

 length of mandible, 85.2; length of lower molar series, 41.1. 



This species has for a long time been regarded by most writers 

 as the same as P. irus (F. Cuv.), but that species has black hands and 

 feet as was originally described by F. Cuvier, whereas the present 

 species has gray hands and feet, and the general color of the pelage 

 is tawny, quite a different hue from that of P. irus. The Macaques 

 on the islands lying between Sumatra and Singapore have a pelage 

 whose color is very similar to this one from Sumatra, but possess 

 dental and cranial characters sufficiently different to prevent them 

 from being considered the same species. Raffles in his description, 

 (1. c.) made no mention of the color of the hands and feet, and this 

 important character for differentiating this from the Malay Macaque 

 seems to have been entirely overlooked by subsequent Authors. In 

 size P. FASCicuLARis and P. irus are about equal, but in general 

 appearance they do not resemble each other very much. 



PiTHECUS MANDIBUI-ARIS Elliot. 



Pithecus mandibularis Elliot, Proc. U. S. Nat. Mus., XXXVIII, 

 1910, p. 347; Lyon, Proc. U. S. Nat. Mus., XL, 1911, p. 137. 

 Type locality. Sungei Sama near Pontianak, Borneo. Type in 

 United States National Museum. 



Genl. Char. Similar in coloration to P. fascicularis but paler, 



