Natural History of the Mammalia of India and Ceylon

Papioninæ

This sub-family comprises the true baboons of Africa and the monkey-like baboons of India. They have the stomach simple, and cheek-pouches are always present. According to Cuvier they possess, like the last family, a fifth tubercle on their last molars. They produce early, but are not completely adult for four or five years; the period of gestation is seven months.

The third sub-family of Simiadæ 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.