74 PRIMATES 
C. eollarvis, CL fuliginosus, C. aethiops, and C. allagena + all being 
from West Africa. 
Cercopithecus..—Muzzle more or less short ; ischial callosities 
moderate ; tail long; no talon to third lower molar. Build more 
slender than in Afweucus. Confined to Africa. 
The members of this and the last genus include those Monkeys 
which in their comparative slender build and length of tail make 
the nearest approach 
to the next subfamily. 
There are numerous 
species, among which 
the Green Monkey (C- 
callitrichus), the Grivet 
(CL qriseo- viridis), the 
Vervet (C. lalandi), the 
Pluto Monkey (C’ pluto, 
Fig. 347), the Patas 
(C. ruber), the Diana 
Monkey ((’. diana), and 
the Mona Monkey (C. 
mona) are well-known 
types. 
Subfamily Semno- 
pithecine. >? — Pelvic 
limbs longer than the 
pectoral; tail very 
long; no cheek- 
pouches; stomach sac- 
culated. Buildslender. 
This subfamily is 
represented by three 
genera, of which one is 
Fic, 347.—The Pluto Monkey (Cercopithecus pluto). From African and two are 
Gray, Proc. Zool. Soc. 1848, p. 57. Asiatic. Mr W. T. 
Blanford, in his J/am- 
mals of British India, observes that “the members of this subfamily 
are readily distinguished by their slender form, and by the absence 
of cheek-pouches. They are more purely herbivorous than the 
Macaque Monkeys, and a considerable portion of their food consists 
of leaves and young shoots. In consequence probably of the nature 
of their food, these Monkeys are more delicate than the species of 
Macacus, and are thus less easily kept in captivity. They are con- 
sequently far less well represented in European museums, and have 
been less studied by European naturalists. Very little is known of 
their general life-history or of their feeding habits.” 
1 Erxleben, Syst. Regne. Animal, p. 22 (1777). 2 Or Colobine. 
