While thus seated, an unusual noise reached their ears coming from the woods. There were parrots and macaws among the palms making noise enough, and fluttering about, but it was not these. The noise that had arrested the attention of our travellers was a mixture of screaming, and chattering, and howling, and barking, as if there were fifty sorts of creatures at the making of it. The bushes, too, were heard “switching about,” and now and then a dead branch would crack, as if snapped suddenly. To a stranger in these woods such a blending of sounds would have appeared very mysterious and inexplicable. Not so to our party. They knew it was only a troop of monkeys passing along upon one of their journeys. From their peculiar cries, Guapo knew what kind of monkeys they were.

Marimondas,” he said.

The marimondas are not true “howlers,” although they are of the same tribe as the “howling monkeys.” They belong to the genus Ateles, so called because they want the thumb, and are therefore imperfect or unfinished as regards the hands. But what the ateles want in hands is supplied by another member—the tail, and this they have to all perfection. It is to them a fifth hand, and apparently more useful than the other four. It assists them very materially in travelling through the tree-tops. They use it to bring objects nearer them. They use it to suspend themselves in a state of repose, and thus suspended, they sleep—nay more, thus suspended they often die! Of all the monkey tribe the ateles are those that have most prehensile power in their tails.

There are several species of them known—the coaita, the white-faced, the black cayou, the beelzebub, the chamek, the black-handed, and the marimonda. The habits of all are very similar, though the species differ in size and colour.

The marimonda is one of the largest of South American monkeys, being about three feet standing upon its hind-legs, with a tail of immense length, thick and strong near the root, and tapering to a point. On its under side, for the last foot or so from the end, there is no hair, but a callous skin, and this is the part used for holding on to the branches. The marimonda is far from being a handsome monkey. Its long, thin arms and thumbless hands give it an attenuated appearance, which is not relieved by the immense disproportioned tail. It is reddish, or of a parched coffee colour, on the upper part of the body, which becomes blanched on the throat, belly, and insides of the thighs. Its colour, in fact, is somewhat of the hue of the half-blood Indian and Negro,—hence the marimonda is known in some parts of Spanish America by the name of “mono zambo,” or “zambo” monkey—a “zambo” being the descendant of Indian and Negro parents.

The noise made by the marimondas which had been heard by our party seemed to proceed from the bank of the river, some distance above the promontory; but it was evidently growing louder every minute, and they judged that the monkeys were approaching.

In a few minutes they appeared in sight, passing along the upper part of a grove of trees that stood close to the water. Our travellers had now an excellent view of them, and they sat watching them with interest. Their mode of progression was extremely curious. They never came to the ground, but where the branches interlocked they ran from one to the other with the lightning speed of squirrels, or, indeed, like birds upon the wing.

Sometimes, however, the boughs stood far apart. Then the marimonda, running out as far as the branch would bear him, would wrap a few inches of his tail around it and spring off into the air. In the spring he would give himself such an impetus as would cause the branch to revolve, and his body following this circular motion, with the long thin arms thrown out in front, he would grasp the first branch that he could reach. This, of course, would land him on a new tree, and over that he would soon spring to the next.

Among the troop several females were perceived with their young. The latter were carried on the backs of the mothers, where they held on by means of their own little tails, feeling perfectly secure. Sometimes the mothers would dismount them, and cause them to swing themselves from branch to branch, going before to show them the way. This was witnessed repeatedly. In other places, where the intervening space was too wide for the females with their young to pass over, the males could be seen bending down a branch of the opposite tree, so as to bring it nearer, and assist them in crossing. All these movements were performed amidst a constant gabble of conversation, and shouting, and chattering, and the noise of branches springing back to their places.

The grove through which the troop was passing ended just by the edge of the promontory. The palm-trees succeeded, with some trees of large size that grew over them.