The Monkeys belonging to the group known as Macaques, or Macacus, nearly
all have tails; some quite long, others short, and still others of
medium length, and Naturalists sometimes divide them into different
groups according to the length of the tail. Others classify in different
ways, making a great many distinct groups or Genus of this particular
tribe of Monkeys, but the three main groups—the Wanderoo, the Barbary
Ape and the Bonnet Monkey—are the most important and include the main
characteristics of all the others.