c «Ap. XVIII. 
QUADKUMANA. 
307 
ornamental characters of monkeys. In most of the 
8 Pecies the sexes resemble each other in colour, but 
111 some, as we have seen, the males differ from the 
tamales, especially in the colour of the naked parts of 
the skin, in the development of the beard, whiskers, 
a nd mane. Many species are coloured either in so ex- 
71. Head of Semnopithocus oomatus. Fig. 72. Head of Cebus capucinus. 
traordinary or beautiful a man mu, and are furnished 
' V) th such curious and elegant crests of hair, that we 
o^n hardly avoid looking at these characters as having 
been gained for the sake of ornament. The accom- 
panying figures (figs. 70 to 74) serve to shew the 
Fi g- 73. 
Head of A teles marginatus. 
Fig. 74. Head of Cebus vellerosus. 
