he lay reading. It was a great favourite with every one, from the cleanliness of its habits and the prettiness of its features and ways. My own pet was kept in a box, in which was placed a broad-mouthed glass jar. Into this it would dive, head foremost, when any one entered the room, turning round inside, and thrusting forth its inquisitive face an instant afterwards to stare at the intruder. It was very active at night, venting at frequent intervals a hoarse cry, like the suppressed barking of a Dog, and scampering about the room, to the length of its tether, after Cockroaches and Spiders. In climbing between the box and the wall, it straddled the space, resting its hands on the palms and tips of the outstretched fingers, with the knuckles bent at an acute angle, and thus mounted to the top with the greatest facility. Although seeming to prefer insects, it ate all kinds of fruit, but would not touch raw or cooked meat, and was very seldom thirsty. I was told by persons who had kept these Monkeys loose about the house, that they cleared the chamber of Bats, as well as insect vermin. When approached gently, my Ei-á allowed itself to be caressed, but when handled roughly it always took alarm, biting severely, striking out with its little hands, and making a hissing noise like a Cat. As already related, my pet was killed by a jealous Caiarára Monkey, which was kept in the house at the same time.” THE RED-FOOTED DOUROUCOULI.[98] This night-loving Monkey has short hair, and a cylindrical tail, and looks like one of the Lemurs. It has rufous hands and feet, the ear-conches are large and prominent, and almost hairless. It inhabits Nicaragua. Another species[99] is quite nocturnal in its habits, coming out after dark only in search of food in the Peruvian valleys. THE SAKIS.[100]