 | Henry Walter Bates - 1880 - 176 lehte
...observe how small was the muscular exertion i'iupl iyed. When howlers are seen in the loi est, ihere are generally three or four of them mounted on the...stramineus in any other part of the Amazons region ; in the neighborhood of Pará a reddish-colored species prevails (M. Belzebuth) ; in the narrow channels near... | |
 | Henry Walter Bates - 1880 - 168 lehte
...and observe how small Wits the muscular exertion ..finpl jyed. When howlers are seen in the t'oiest, there are generally three or four of them mounted...captive individuals. It is probable, however, that Ihe noise serves to intimidate their enemies. I did not meet •with the Mycetes stramineus in any... | |
 | Tropical regions - 1882 - 288 lehte
...great an amount of noise. When howlers are seen in the forest, generally three or four are perched on the topmost branches of a tree. It does not appear that their ear-splitting and soul-harrowing din is occasioned by any sudden alarm, — at least, such is not the... | |
 | William Henry Flower, Richard Lydekker - 1891 - 792 lehte
...characteristic is their prodigious power of voice. Mr. Bates, in his Naturalist on the Amazons, observes that " when Howlers are seen in the forest there are generally...that the noise serves to intimidate their enemies." Several species have been described, the Red Howler (M. seniculus) and the Ursine Howler (M. ursinus)... | |
 | Henry Ogg Forbes - 1894 - 396 lehte
...Capuchins of higher cerebral organisation. " When Howlers are seen in the forest," remarks Mr. Bates, " there are generally three or four of them mounted...that the noise serves to intimidate their enemies." The muscular power employed in giving vent to their cavernous roar appears to be small. Their food... | |
| |
The deep volume of sound in the voice of the howling monkeys, as is well known, is produced by a drum-shaped expansion of the larynx. It was curious to watch the animal whilst venting its hollow cavernous roar, and observe how small was the muscular exertion... 