. Wanderings in South America, the north-west of the United States and the Antilles in the years 1812, 1816, 1820 & 1824 : with original instructions for the perfect preservation of birds, etc. for cabinets of natural history . iana :—- At early morning, at dusk, and through the night, at allour camping places, we were accustomed to hear the Howlersserenading. To my mind the sounds produced by thesemonkeys more nearly resembled a roar than a howl, and whensufficiently far off are not unpleasant to the ear. Whenheard from a distance of half a mile or so they seem to beginwith low notes, swellin
. Wanderings in South America, the north-west of the United States and the Antilles in the years 1812, 1816, 1820 & 1824 : with original instructions for the perfect preservation of birds, etc. for cabinets of natural history . iana :—- At early morning, at dusk, and through the night, at allour camping places, we were accustomed to hear the Howlersserenading. To my mind the sounds produced by thesemonkeys more nearly resembled a roar than a howl, and whensufficiently far off are not unpleasant to the ear. Whenheard from a distance of half a mile or so they seem to beginwith low notes, swelling gradually into louder and longer 422 EXPLANATORY INDEX. ones till they merge into a prolonged roar, which dies gradu-ally away with a mournful cadence. When not more than one or two hundred yards away,and consequently plainly heard, they commence with a seriesof short howls, which break off into grunts, and, at everyrepetition, become longer and longer till their voices have gotfairly in tune, when they give their final roar, which dies asgradually away. Then, after an instants silence, a few deepgrunts are given, as if the remains of the compressed air intheir throat drums were being got rid of. Listening carefully. to the performance, one can detect a voice at a much higherkey than the others, especially in the dying-away Indians say this is made by a dwarf monkey of the samefamily which accompanies every troop. I was of the opinionthat it was the voice of a female Howler, but the Indians,who are very careful observers, said it was not. With theirblack negro-like faces, and long red beards covering the bonyhowling apparatus below their throats, they are curious-looking creatures. Some specimens of the Red Howler which were brought to EXPLANATORY INDEX. 423 England, exhibited the peculiar structure of the throat mostadmirably. When the monkey opens its mouth, the de-velopment of the hyoid bone is easily seen. It forms akind of bony drum communicating with the w
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