PYGATHRIX 35 
Type locality. Sumatra. Type in British Museum. 
Genl. Char. General color above and below, much deeper and 
richer than P. MELANOLOPHA; under parts not yellow. 
Color. Crest on hinder part of head brownish black in front, but 
remainder, together with hind neck, yellowish red; long brownish 
black stiff hairs shooting outwards from a narrow line on forehead 
over eyes, continuing backwards from corner of eyes over temples 
to back of head, forming a narrow streak; top and sides of head, and 
outer side of limbs bright fox red; upper parts of body dark brown- 
ish red, close to cinnamon rufous; flanks lighter red; throat and sides 
of neck buff, with a red tinge varying in depth among individuals ; inner 
side of limbs and lower abdomen reddish buff; chest and upper parts 
of abdomen reddish; tail bay color throughout. Ex type in British 
Museum. 
Measurements. Total length, 1,530; tail, 850; foot, 180. Skull: 
total length, 98.3; occipito-nasal length, 86.5; intertemporal width, 
47.8; breadth of braincase, 62.8; Hensel, 62.9; zygomatic width, 78; 
median length of nasals, 91; length of upper canines, 19; length of 
upper molar series, 26; length of mandible, 68.1; length of lower molar 
series, 35. Ex type British Museum? 
This is a larger and differently colored monkey from S. MELANO- 
LOPHUS Raffles, and is recognizable also by the differences between 
the skulls, that of the present species not only being larger in accordance 
with the greater size of the animal, but has the upper tooth rows 
more curved, a broader basioccipital and presphenoid, a more largely 
developed bullz, and a broader mastoid region. Canines much longer. 
The crest of P. NoBILIs is longer and of quite a different color. 
Anderson in his Zoology of Yunnan says that an examination of 
the type of P. nopixis did not reveal any differences between it and 
P. MELANOLOPHUS. I wonder, however, that he arrived at such a 
conclusion, and it must be supposed that he inadvertently compared 
two specimens of P. NosiLis together, but if this was not the case, it 
is difficult to understand how he could reconcile the difference in size 
and coloration existing between the two forms, to cause him to con- 
sider them as belonging to one species, and this also without considering 
the cranial characters. 
PYGATHRIX RUBICUNDA (Miiller). 
Semnopithecus rubicundus Miill., Tijdsch. Natur. Geschied., V, 
1838, p. 137, pl.; Martin, Mammif. Anim., 1841, p. 473; Mill. 
und Schleg., Verhandl., 1839-44, pp. 61, 69, Tab. 9, figs. 1, 
