56 PYGATHRIX 
near hips; feet blackish; hairs from eyes across temples to ears seal 
brown; whiskers beneath yellowish gray; sides of neck, chin, throat, 
inner side of arms and legs, under parts of body and flanks, grayish 
white ; tail, Prout’s brown for basal half, grading into blackish brown 
for the remainder. Ex type British Museum. 
Measurements. Skull: total length, 90; occipito-nasal length, 
74.2; intertemporal width, 40.8; breadth of braincase, 54; Hensel, 
62.2; zygomatic width, 67.6; median length of nasals, 11.5; palatal 
length, 30; length of upper molar series, 27.9; length of mandible, 
68.4; length of lower molar series, 31.9. Ex type British Museum. 
Several specimens of this form from the southern part of Malacca 
are in the British Museum, resembling each other in the color 
of their coats, much darker than those from the Straits Settlements 
and lower parts of the peninsula, and more like P. opscura but with- 
out the nuchal patch, and not so dark in color. They belong to the 
white—or grayish—thigh group of these monkeys. These examples 
had gone under the name of albo-cinereus Desmarest, but that species 
has “épaules, flancs, face externe du haut des bras et des cuisses d’un 
gris clair; milieu du dos d’un gris un peu plus foncé,” which in no wise 
described any Sumatran PycaTurix that I have seen, and comes nearer 
to P. aycuxa than any other. Eydoux and Souleyet in their work on 
the voyage of the ‘Bonite’ describe and figure a monkey under the name 
of albo-cinereus Desmarest, but which answers in no respect the 
description that Author gives of his species, and which is evidently 
the Semnopithecus opscurus Reid. 
PYGATHRIX DILECTA (Elliot). 
Presbytis dilecta Elliot, Ann. Mag. Nat. Hist., IV, 8th Ser., 1909, 
p. 270. 
Type locality. Selangore, Malacca. Type in British Museum. 
Genl. Char. Hairs radiating from a point on forehead; general 
hue of body pale, thighs white, with dark stripe from near hip to 
ankle over knee; tail moderately long. | 
Color. Brown superciliary stripe, turning backwards over temples 
at corners of eyes; face black; eyelids apparently flesh color; crown 
grayish brown, hairs whitish at base; occiput, hind neck, upper part 
of body and shoulders, outer side of arms to elbow, and flanks, drab; 
an indistinct purplish gray stripe on flanks; outer side of forearms 
grayish brown, grading into black on wrists and hands; thighs white 
tinged with gray, and with a brown stripe from near hip to near ankle, 
