PYGATHRIX 25 
genus Semnopithecus. The Author begins with those species 
not represented in the Leyden Museum, viz.: (S.) GERMAINI 
Milne-Edw., (S.) Nicrtpes A. Milne-Edw., and (S.) PILEATUs; 
of which three he gives descriptions. Of three species he had 
no personal knowledge: (S.) PHAYREI; (S.) BARBEI; and (S.) 
PRIAMUS. (S.) albipes = P. ENTELLUS he considers distinct. 
The remaining examples he divides into two groups, as Sem- 
nopithect Vert, and Semnopitheci Abnormes, the latter con- 
taining S. NEMzus (Linn.) ; S. ROXELLAN# A. Milne-Edwards; 
and S. masica = N. tanrvatus Wurmb. Only the first of these, 
NEMZuS belongs to PycaTHRIx, the others being members of 
other genera, RHINOPITHECUS, and Nasatis respectively. The 
first group is divided into two sections: I. “Espéces pourvues 
d’une huppe comprimée,” and II. “‘Point de huppe proprement 
dite.” The first of these has six subdivisions, according to the 
style of crest and color of pelage, A-F. A. has (S.) FRON- 
TaTus; B. (S.) RuBIcUNDUS; C. (S.) mitratus (Escholtz), = 
PyGATHRIX AYGULA (Linn.); (S.) albocinereus, comprising 
two or more species, the albocinereus Desmarest, being unde- 
terminable; D. (S.) ferrugineus Schleg.. = PyGaTHrRix 
MELANOLOPHA (Raffles) ; E. (S.) FEMORALIS; (S.) CHRYSOME- 
LAS; (S.) meglectus Schleg.. = PyGaTHRIX FEMORALIS 
(Horsf.); F. (S.) opscurus. The second section has two 
divisions A and B. The first, A, contains those species with hair 
on top of head directed backward and lengthened possibly at 
the occiput, and the dominant color of the pelage tending to 
black or grayish brown, with these species: (S.) JoHNI; (S.) 
CEPHALOLOPTERUS ; (S.) kelaarti Schleg., = PyGaTHRIX CEPHA- 
LOLOPTERA (Zimmer.); (S.) senex Erxl., undeterminable. 
The second, B, has species with long, erect hairs on forehead, 
and lengthened hairs on occiput, but not forming a crest ; thumb 
shorter; pelage of young russet red, changing early to a very 
different color, the adults being uniform black, or black with 
hairs tipped with whitish gray, or a uniform russet red, as 
follows: (S.) maurus F. Cuv., = PyGatHrix auraTtaA (Geoff.) ; 
(S.) pyrrhus Horsf., = PycatuHrix aurata (Geoff.); (S.) 
pruinosus Desm., = PyGATHRIX CRISTATA (Raffles) ; (S.) EN- 
TELLUS; (S.) scHISTACEUS; and (S.) dussumieri (I. Geoff.), 
= PyYGATHRIX HYPOLEUCA (Blyth); (S.) GERMAINI is men- 
tioned, but is not in the Museum. 
