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NATURAL HISTORY. 
many other kinds do so, but it has been recorded of this species from its first discovery. They live 
in Para, and in the Brazils, and are remarkable for the agile and graceful way in which they jump 
from tree to tree, the females carrying the little ones on their backs, and moving with the vivacity and 
restlessness of birds. Besting during the day, they roll themselves up like balls, and utter plaintive, 
deep-seated, weary cries, which have given them the name of Ventriloquist Monkeys. At night they 
THE C ALLITlffil X. AM1CTUB. 
are all life and movement, and then they search for insects and eggs, and enjoy themselves. Their 
colour is a reddish-grey, and spotted on the upper parts of the body, and beneath and on the limbs 
the tint is of a vivid maroon. The tail is grey, tipped with white. There are fourteen species of the 
genus, and they range to the southern limits of the great forests. 
GENUS NYCTIPITHECUS— THE DOUEOU COULIS— THE OWL MONKEYS. 
The name given to these Monkeys conveys their habit of sleeping by day, waking up in fche 
evening, and leading a very restless life during the greater part of the night. They are small animals. 
