eo MAMMALS which is very soft. The tail is long, and covered with hair at the root and tip, while the middle portion of it is nearly bare. The eyes are enormous, and, indeed, seem, together with the equally large ears, to constitute the greater part of the face, for the jaw and nose are very small, and the latter is set in, like that of a pug dog, almost at a right angle. The hind-limb at once attracts attention from the great length of the tarsal bones, and the hand is equally noticeable for its length, the curious claws with which it is provided, and the extraordinary disc-shaped palps on the palmar surface of the fingers, which probably enable the animal to retain its hold in almost any position. ° This weird-looking creature we were unable to keep long in captivity, for we could not get it to eat the cockroaches which were almost the only food with which we could supply it. It remained still by day in its darkened cage, but at night, especially if dis- turbed, it would spring vertically upwards in an odd mechanical manner, not unlike the hopping of a flea. On the third day it found a grave in a pickle- bottle.’ The aye-aye is quite as curious, with its rodent- like incisors, its absence of tusks, and its attenuated middle claw, with which it extracts from their burrows the larve which are its natural food. In appearance it is not unlike a cat with a large bushy tail and rounded ears. ‘It is no wonder, says Mr. Shaw, ‘that in connection with so curious an animal a number of superstitious beliefs should be current among the Betsimisaraka, in whose country the aye- aye is principally found. In reference to its name,