DISTRIBUTION.--This species was discovered by Mr. Monteiro in Cuio Bay on the West Coast of Africa, to the south of Loanda; and the late Captain Cameron, R.N., brought a few specimens home with him from Bailunda, on his return from his celebrated march across the Continent. HABITS.--Little is known of this species from observation in the field. A few specimens have reached Europe, and on one that lived in the Zoological Gardens in London, Mr. Bartlett made the following observation: "The animal has the power of turning its ears back by the complex muscles of their external aspect, and folding them up when at rest. When moving about or in search of food they spread out and stand upward and forward, reminding one of those of the Aye-Aye; but when folded back and down, the animal's face bears a strong resemblance to the Douroucouli (_Nyctipithecus_)." VI. THE GREAT GALAGO. GALAGO CRASSICAUDATA. _Galago crassicaudatus_, Geoffr., Ann. Mus., xix., p. 166 (1812). _Otolicnus crassicaudatus_, Peters, Reis, Mossamb. Saügeth., t. 2, t. 4, figs. 1-5. _Otogale crassicaudata_, var. kirkii, Gray, P. Z. S., 1864, p. 456. _? Galago lasiotis_, Peters, S. B. Ges., Nat. Fr. Berl., 1892, p. 224. CHARACTERS.--Hair long and woolly. Head round; muzzle more elongated than in other Galagos; nose-pad with a deep {48}furrow; eyes large; ears large, the upper half membranaceous and nude; tail long, thick and bushy; fourth digit of hand and foot longest; fingers and toes not united by a membrane, but with flat disc-like terminations. Hair Mouse-grey at base, silver-grey at tips; the hair on the belly white tipped, sometimes entirely white; hairs on back longer and with black tips. General colour yellowish-brown, with a lighter band from the forehead along the centre of the nose and round the eye-circles, which are darker. Iris reddish-brown. Top of head rusty-brown; back grey; sides of body, cheeks, and outer side of limbs grey, faintly washed with rusty-red; whole under side grey or yellowish-white. Tail ferruginous; hands and feet deep rufous-brown; short hairs of digits blackish-brown. Length, 13 inches; tail, 16 inches. The female has the pelage similar to that of the male. The coast form, which has been described as Kirk's Galago (_G. kirkii_), is only a variety of the present species. In it the fur is pale ashy-grey; the hairs at the base Mouse-grey, tipped with grey, with longer black hairs distributed over the body; cheeks, inner sides of limbs, and under side greyish-white; face, crown, and nape washed with reddish-brown, which extends on the outer side of the limbs; lower back more lightly washed; tail, dirty grey.