considerably larger in size; the colour is of a ruddier hue; the cartilages of the nose are longer than the jaws; and the colour of the skin on the face, extremities, and ears, are black, while the upper eyelids are white. It is a native of Africa, but hitherto undescribed by any traveller in a state of nature.

To illustrate the second form of the true Cynocephali, we have figured,

THE MANDRIL OR RIB-NOSE BABOON.

Papio mormon.-GEOFFROY.

PLATE XVII.

Ribbed-nose baboon, Pennant's Quadrupeds, p. 190.-Papio mormon, Geoffroy, Annales du Museum, xix. p. 184.Cynocephalus mandril, Desmarest's Mammalogie, p. 70.—Le Mandril, Frederic Cuvier, Histoire Naturelle des Mammiferes; Audibert, Histoire Naturelle des Singes.

THIS formidable animal, the fiercest and most powerful of its race, is a native of the Guinea Coast, and has been well known for a long period in our menageries. In an adult state, the colours of its fur may vie with any of the quadrumanæ, and the general effect is heightened at a little distance by the rich blue and purple shades of the muzzle, lips, and other naked parts of the skin. Upon a nearer view, however, these beauties do not compensate for its other