The chemeck appears to have a wider range. It possesses a thumb, slightly projecting, and furnished with a nail--though the thumb cannot be used like that of a human being, as it is incapable of being opposed to the fingers. It is a gentle creature, and capable of considerable cultivation. Although playfully inclined, it is seldom spiteful; while its disposition is very different from that exhibited by the capricious temper of the Old World monkeys. It soon learns to distinguish its friends; and will playfully pretend to attack them, but never does any real harm. It is covered with a long fur, which falls densely over the body; as is its tail, which at once distinguishes it from its relatives. The ear is somewhat similar to that of man, but has no lower lobe. The nostrils open at the sides, and are separated by a wide piece of cartilage. The habits, however, of the ateles, are so similar, that they require no separate description. Wandering through the forest with an Indian guide, we reach an igarape or stream, where the lofty branches of the trees do not completely meet overhead, but where the opening is as yet of no great width. Lying concealed, we hear a strange chattering and rustling among the foliage in the distance. Pieces of rotten wood, husks, and nuts come dropping down, and we may see the boughs alive with numberless dark-haired little creatures, their long lithe tails twisting and twirling, their active limbs stretched out in all directions, as they make their way through the forest. We recognise them as a troop of ateles, migrating to some other district, or on some expedition in search of food.