1911 Encyclopædia Britannica/Grivet
GRIVET, a monkey, Cercopithecus sabaeus, of the guenon group, nearly allied to the green monkey. It is common throughout equatorial Africa. The chin, whiskers and a broad band across the forehead, as well as the under-parts, are white, and the head and back olive-green. These monkeys are very commonly seen in menageries.