A small cercopithecus is found in great abundance; but we were not able to meet with a good drawing, or even a tolerable description of it.
"A New Voyage Round the World, in the years 1823, 24, 25, and 26, Vol. 2"
Otto von Kotzebue
The third sub-family of Simiadae consists of the genera Cercopithicus, Macacus, and Cynocephalus, as generally accepted by modern zoologists, but Jerdon seems to have followed Ogilby in his classification, which merges the long-tailed Macaques into cercopithecus, and substituting Papio for the others.
"Natural History of the Mammalia of India and Ceylon"
Robert A. Sterndale
Three species of cercopithecus were the most alarmed; they dashed about their cages and uttered sharp signal-cries of danger, which were understood by the other monkeys.
"The Descent of Man and Selection in Relation to Sex, Vol. I (1st edition)"
Charles Darwin