belonging or pertaining to the primate group or superfamily Platyrrhini, comprising the New World monkeys, having a broad, flat nose and usually a long, prehensile tail.
platyrrhine (plāt'ĭ-rīn') Pronunciation Key
Of or relating to the New World monkeys, distinguished from the Old World monkeys by a broad nasal septum and widely separated nostrils that generally open to the side.