Basal part of hair Mouse-grey. Upper side reddish-brown, more rufous down the back, and on the tail, except its distal half, which is darker. Top of head and sides of face darker; a narrow white streak from the brow down the nose; ring round the eyes dark, wider on the inner side; chin, throat, inner side of limbs, and under surface of body creamy-white. In the young, which remains blind for several days after birth, the white nose-streak is less defined, and the fur is shorter and lighter than that of the parents. Orbits approximating; front bones of jaw (the pre-maxillæ) projecting beyond the incisors; upper median pre-molar teeth with enlarged heel, and with one or two diminutive cusps; upper molars with a small cusp on the oblique ridge; wrist-bones elongated. DISTRIBUTION.--Demidoff's Galago occurs in Senegal, in West Africa, and has been obtained in Central Africa in the {46}Niam-Niam country by Dr. Schweinfurth, and in the Monbuttu country by the late Emin Pasha. HABITS.--Writing of Demidoff's Galago in a letter from Africa addressed to Mr. A. Murray, Mr. Thomson says: "It was a most interesting and amusing pet, not only quite tame, but manifesting strong attachment. It was a very epitome of zoology, of the size and colour of a large Rat; it had the tail of a Squirrel, the facial outline of the Fox, the membranous ears of the Bat, the eyes and somewhat of the manners of the Owl in its cool odd way of peering at objects, the long slender fingers of a lean old man who habitually eats down his nails, and all the mirthfulness and agility of a diminutive Monkey. It hated its cage at night, but delighted to leap among the bars of the chairs ranged purposely round the table for it. It could clear a horizontal distance of at least six feet at a bound.... It possessed a curious power of folding its membranous ears back upon themselves and somewhat corrugating them at pleasure; and it appeared to me that the palms of its hands and feet were endowed in some degree with the power of suction.... I have seen it maintain itself in positions where the mere lateral pressure of its limbs appeared to be inadequate for the purpose.... I never saw it muster courage enough to attack either a Grasshopper or a Mantis."... V. MONTEIRO'S GALAGO. GALAGO MONTEIRI. _Galago monteiri_, Bartlett, P. Z. S., 1863, p. 231, pl. xxviii. _Callotus monteiri_, Gray, P. Z. S., 1863, p. 145. CHARACTERS.--Fur Mouse-grey at base, with white tips; pupils of eyes oval and vertical; ears very large and naked; hairs on face and cheeks short; feet broad, short, and strong; toes {47}broad, with rounded discs; thumb very broad; tail very long. Entirely pale grey over the head, face, cheeks, body, and tail; throat nearly white; hands and feet dark brown, nearly black; nose black; ears nearly black. One of the largest species of the Sub-family. Length, 12 inches; tail, 16 inches long.