Contents: M. Tomasello,J. Call,Introduction: Intentional Communication in Nonhuman Primates.J. Call,M. Tomasello,The Gestural Repertoire of Chimpanzees (Pan troglodytes). S. Pika,Gestures in Subadult Bonobos (Pan paniscus).K. Liebal,Gestures in Orangutans (Pongo pygmaeus). S. Pika,Gestures in Subadult Gorillas (Gorilla gorilla). K. Liebal,Gestures in Siamangs (Symphalangus syndactylus).N. Hesler,J. Fischer,Gestural Communication in Barbary Macaques (Macaca sylvanus): An Overview.J. Call,M. Tomasello,Comparing the Gestures of Apes and Monkeys. M. Tomasello, J. Call,Ape Gestures and the Origins of Language.