Xenotrichini (the Antilles monkeys) is a tribe of extinct primates, which lived on the Greater Antilles as recently as the 16th century. These Caribbean islands no longer contain endemic primates, although the most recently discovered species, the Hispaniola monkey, was reported to have lived on Hispaniola until the settlement by the Europeans. The relationship of these species is supported by details in the formation of the skull and the lower jaw, such as a reduction in the number of teeth.