The Giraffe, remarked Pliny, "is as quiet as a sheep." The Roman public, to whom the first Giraffe ever brought into Europe was exhibited, expected from its name "to find in it a combination of the size of the camel and the ferocity of a panther." As a matter of fact, Giraffes in captivity are not always sheep-like in temper. They will kick with viciousness and vigour, and will even initiate an attack upon their keeper. At the same time they are singularly nervous creatures, and have been known to die from a shock. In moving, the Giraffe uses the fore- and hind-limb of each side simultaneously; this gives to its gait a peculiar rocking motion, the singularity of which is heightened by the curving movements of the long neck, which even describes now and then a figure of eight in the air. _Giraffa camelopardalis_ and the species (?) already referred to are the only existing Giraffes (of the genus _Giraffa_), and they are not found out of Africa. Sir Harry Johnston has lately given a brief account of a larger and more brilliantly coloured species from Uganda {305} which will probably prove to belong to a distinct genus. It has five horns, the additional pair being placed above the ears. Sir Harry Johnston has quite recently made known another genus of Giraffidae living in the Semliki forest, Belgian Congo district. The skin and two skulls, as well as the bones of the feet, are known from specimens sent by Sir Harry Johnston to the Natural History Museum, and briefly described to the Zoological Society by Professor Ray Lankester.[207] This creature, of which the native name is "Okapi," is proposed to be called _Ocapia johnstoni_. The first actual specimens which reached this country were two bandoliers made from the skin of the flanks, which were striped black and white, and were not unnaturally held to be portions of the skin of a new species of Zebra. The animal is of about the size of a Sable Antelope, and the back and sides are of a rich brown colour; it is only the fore- and hind-limbs which are striped, the striping being longitudinal, _i.e._ parallel with the long axis of the body. The head is Giraffe-like, but there are no external horns; wisps of curled hairs seem to represent the vestiges of the horns of other Giraffes. The tail is rather short, and the neck is rather thick and short. The skull is clearly Giraffine. The basicranial axis is straight, and the fontanelle in the lachrymal region is very large. Upon the frontal bones near their parietal border is a large boss on either side, which presumably represents the horn core or "os cornu." On the mandible the great length of the diastema between the incisors and premolars is a Giraffine characteristic. The Okapi lives in pairs in the deepest recesses of the forest.