1 70 
NATURAL HISTORY. 
Finally this and all the Howlers have the stomach a little disposed to be arranged as more than 
one single sac, and in this there is just the hint of the condition in the Semnopitheci of the Old 
World. 
THE BLACK HOWLER * 
These Monkeys are called the Monos by the natives of Guatemala, and certainly deserve some 
other name than Howlers. Howling is a moderate noise in comparison with the loud, widely-heard 
yell which they can produce. The effect of these noises when produced by four or five animals trying 
their voices one against the other in the quiet forest is most remarkable and unpleasant. Salvin thus 
writes : — “ The wonderful cry whence Mycetes gets its trivial name of Howling Monkey is certainly 
THE CAi'Aiiiiu. (From, the .Proceedings ttf the Zoological Society.) 
most striking, and I have sometimes endeavoured to ascertain how far this cry may be heard. It has 
taken me an hour or more to thread the forest undergrowth from the time the cry first struck my ear 
to where, guided by the cry above, I stood under the tree where the animals were. It would certainly 
not be over-estimating the distance to say two miles. When the sound came over the Lake of Yzabel 
unhindered by trees, a league would be more like the distance at which the Monos’ cry could be heard.” 
The Monos are abundant throughout the forests of the eastern part of Guatemala, but are 
unknown in the forest-clad regions which stretch toward the Pacific Ocean. They are particularly 
plentiful in the unbroken forest country which occupies the northern part of Yera Paz, for seldom an 
hour passes without the weird outcry falling on the ear of the traveller even when at the height of 
6,000 feet At this height in a cold and damp region, where the forest trees are of the largest growth, 
these Howlers congregate in the upper branches of the highest trees. Living in small companies of 
five or six, they crawl sluggishly along the boughs when disturbed. It was from such a locality that 
* Mi/cdcs villosvis. 
