National Geographic : 1938 May
© National Geographic Society Painting byElie Cheverlange LARGEST OF AMERICAN MONKEYS IS THE HOWLER (LEFT), WHOSE BEARD HIDES A HUGE, BONY, BOXLIKE "AMPLIFIER" With this natural built-in loud-speaker, a HOWLING MONKEY can so magnify its voice that a choirofthem, roaring inthejungle dawn, can be heard for miles. Its tail is strongly prehensile-one shot by Darwin still hung by its tail though stone-dead, and thetree had tobefelled togetit. This is a RED HOWLER. Another tropical American is the BEARDED SAKI MONKEY (right), with dense chin whiskers and bushy, non-prehensile tail.