_Galago (Otolicnus) allenii_, Mivart, P. Z. S., 1864, p. 647. _Otogale pallida_, Gray, P. Z. S., 1863, p. 140, pl. xix. _Otolicnus apicalis_, du Chaillu, Equat. Africa, App., p. 471. _Galago elegantulus_, Slack, Proc. Ac. Sc. Phil., 1861, p. 153. (_Plate IV._) {44}CHARACTERS.--Head round; muzzle pointed; eyes very large; ears also very large, long, nude, and membranaceous; fingers and toes very long, slender, and fine. Tail thick, round, and longer than the body; ankle-bones elongated. Length of body, 8¼ inches; tail, 10 inches. Head brownish-grey; a narrow black ring round the eyes; a streak from the forehead down the nose whitish; back greyish-brown, washed (sometimes markedly) with rufous on the upper back, fading out towards the root of the tail; the latter black or greyish-black. Outside of arms and legs washed with rufous, sometimes with a white spot on the shoulder-joint and over the groin; posterior aspect of legs sooty-black; cheeks, sides of nose, entire under surface, and inner side of limbs creamy-white with a rufous-washed bar across the chest. Muzzle shorter than the diameter of eye-socket. Incisors seen from the side, more or less hidden by the canines; anterior upper pre-molar very canine-like, relatively much produced longitudinally, with an interval between the anterior and median pre-molars; posterior upper pre-molar four-cusped, and with an intermediate cusp on the oblique ridge; posterior upper molar almost equal in size to the median one. DISTRIBUTION.--This species has been recorded from the Gaboon, in West Africa, and from Fernando Po, whence it was first obtained by Captain Allen, R.N., in 1837. HABITS.--Although little or nothing has been recorded of its habits, it is unlikely that they differ much from those of the species already known. IV. DEMIDOFF'S GALAGO. GALAGO DEMIDOFFI. _Galago demidoffi_, Fischer, Act. Soc. des Nat. Mosc., i., p. 24, f. 1 (1806); Peters, P. Z. S., 1863, p. 380, pl. xxxv.; Mivart, P. Z. S., 1864, p. 648. {45}_Otolicnus peli_, Temm., Esquis. Zool. Mamm., p. 42 (1853). _Otolicnus demidoffi_, Wagner in Schreb., Säugeth. Suppl., v., p. 160 (1855). _Hemigalago demidoffi_, Dahlb., Stud. Zool., p. 230 (1856). _Galago murinus_, Murray, Edinb. Phil. Journ. (n.s.), x., pp. 243-251, pl. 11 (1859). CHARACTERS.--Head round; body short and thick; snout very narrow; long bristles on the face, corners of the eyes, and sides of the nose; ears long, oval, membranaceous, transparent, the inner margin haired; eyes large and projecting; nose elongated in front, and projecting above the upper lip; fingers slender; wrist, ankle, hands and feet short-haired; digits naked; tail longer than body, round and slender. Length, 5 inches; tail, 8 inches.