THE AMERICAN MONKEYS. 3h In it the prehensile tail reaches its perfection. It is a remarkably sensitive organ, answering the purpose, as the Rev. J. G. Wood puts it, of “a fifth hand,” being capable of use “for any purpose to which the hand could be applied,” and for hooking out objects from places “where a hand could not be inserted.” According to Mr. Wood they wrap their tails about them to protect themselves from cold, to which they are very sensitive, and hold on by them to the branches of trees with such tenacity that they remain suspended after death. The prehensile part of the tail is naked and of extreme sensibility. The tail is also used to preserve balance when walking erect, for which purpose it is thrown up and curled over. The appearance of these monkeys, as they leap from branch to branch in their native woods, swinging by their tails, and often hanging on to those of each other, until a living bridge is formed from tree to tree, is exceedingly picturesque. The Howling The Howling Monkeys form the single genus Monkeys. of the second sub-family of the Cebidz—the genus Mycetes. There are a number of species, popularly known as the “Golden Howler,” the “Black Howler,” &c. &c. They are chiefly characteristic for the attribute to which they owe their name, The howl is a loud mournful cry which can be heard at a great distance, and is said by Wallace to proceed from the leader of the band who howls for the whole company. These animals are larger and more clumsy than the spider monkeys and therefore less agile; they have powerful, prehensile tails. The “Howler ”is much prized by the Indians as an article of food. The Beardea The third sub-family of the Cebidz includes Seki. some dozen species which inhabit the forests of Equatorial America. They are of the genus Pithecia, and some species have broad beards and bushy tails. The head of the Bearded Saki (Pethecta Satanas) has a singularly human appearance.