PYGATHRIX 41 
the two forms are entirely different, and there are examples of both 
sexes, and of adults and young named P. Frontata, in the Leyden 
Museum, some of which exhibit the coloration of this northwestern 
form. 
PYGATHRIX CRUCIGER (Thomas). 
Semnopithecus cruciger Thomas., Ann. Mag. Nat. Hist., X, 1892, 
p. 475; Id. Proc. Zool. Soc. Lond., 1893, p. 3; Hose, Mamm. 
Borneo, 1893, p. 15; Forbes, Handb. Primates, II, 1894, 
p. 121. 
Presbytis femoralis cruciger Elliot, Cat. Mamm. Field Columb. 
Mus., F. C. M. Pub., VIII, 1906, p. 572. 
CROSS-BEARING LANGUR. 
Type locality. Miri River, Sarawak, Borneo (Hose). Type in 
British Museum. 
Geogr. Distr. Miri River, Batang Lupar River, Bakam River, 
Borneo. (Hose). 
Genl. Char. Hair of head long, forming an irregular crest, which 
is partly erect, and partly directed backward on the occiput; hairs on 
fore part and sides of head directed backwards, only those in center 
inclined to form a low, elevated, ridge-like crest. 
Color. Top and sides of head, flanks, outer side of thighs, and 
legs below knees, deep ochraceous rufous; back of head and neck, 
upper part of body and shoulders, outer side of arms, stripe at knee, 
and another on inner side of leg, hands and feet jet black; this color 
on the back being gradually restricted in width as it goes towards the 
root of tail; lower part of cheek covered with long hairs directed back- 
ward, and reaching to the shoulders, golden yellow, as are also the 
hairs on throat and upper part of chest; inner side of arms reddish 
yellow, becoming less red towards the wrist; under parts from chest 
to lower abdomen ochraceous rufous, but paler than the flanks ; lower 
abdomen and inner side of legs yellowish white; tail black, basal half 
beneath white, and tip inclined to rufous. The type of this species 
being a very young animal, not having obtained its fully colored dress, 
the description has been taken from an adult male procured on the 
Batang Lupar River, Sarawk, No. 93. 1. 30. 1. British Museum Col- 
lection. 
Measurements. Total length, 1,240; tail, 740; foot, 160, (skin). 
Skull: total length, 92; occipito-nasal length, 81.3; intertemporal 
width, 45; Hensel, 60; zygomatic width, 68.1; breadth of braincase, 
52.4; median length of nasals, 68; palatal length, 28.6; length of upper 
