long, smooth, and glossy, became dingy and ragged, like that of the specimens seen in museums; and the bright scarlet colour of its face changed to a duller hue. This colour, in health, is spread over the features up to the roots of the hair on the forehead and temples, and down to the neck, including the flabby cheeks, which hang down below the jaws. The animal in this condition looks, at a short distance, as though some one had laid a thick coat of red paint on its countenance. The death of my pet was slow; during the last twenty-four hours it lay prostrate, breathing quickly, its chest strongly heaving. The colour of its face grew gradually paler, but was still red when it expired. As the hue did not quite disappear until two or three hours after the animal was quite dead, I judged that it was not exclusively due to the blood, but partly to a pigment beneath the skin, which would probably retain its colour a short time after the circulation had ceased. After seeing much of the morose disposition of the Uakari, I was not a little surprised one day at a friend’s house to find an extremely lively and familiar individual of this species. It ran from an inner chamber straight towards me after I had sat down on a chair, climbed my legs, and nestled in my lap, turning round and looking up with the usual Monkey’s grin after it had made itself comfortable. It was a young animal, which had been taken when its mother was shot with a poisoned arrow. Its teeth were incomplete, and the face was pale and mottled, the glowing scarlet hue not supervening in these animals before mature age; it had also a few long black hairs on the eyebrows and lips. The frisky little fellow had been reared in the house amongst the children, and allowed to run about freely, and took its meals with the rest of the household. There are few animals which the Brazilians of these villages have not succeeded in taming. I have even seen young Jaguars running loose about a house, and treated as pets. The animals that I had rarely became familiar, however long they might remain in my possession, a circumstance due, no doubt, to their being kept always tied up. The Uakari is one of the many species of animals which are classified by the Brazilians as ‘mortal,’ or of delicate constitution, in contradistinction to those which are ‘duro,’ or hardy. A large proportion of the specimens sent from Ega die before arriving at Para, and scarcely one in a dozen succeeds in reaching Rio Janeiro alive. It appears, nevertheless, that an individual has once been brought in a living state to England, for Dr. Gray relates that one was exhibited in the gardens of the Zoological Society in 1849. The difficulty it has of accommodating itself to changed conditions probably has some connection with the very limited range or confined sphere of life of the species in its natural state, its native home being an area of swampy woods, not more than about sixty square miles in extent, although no permanent