The Diana monkey (Cercopithecus diana) is a species of catarrhine (old-world) monkey native to Sierra Leone, Liberia, and Côte d’Ivoire. It’s named after the Roman goddess, Diana, goddess of wild animals and hunting, and the boundary between the wild and civilization, among other things. The Diana monkey gets this name due to its white crescent-shaped browband, which resembles the bow that the goddess is often depicted with.