The Collaborative International Dictionary of English v.0.48:

Lagothrix \Lagothrix\ prop. n.
   A mammal genus comprising the woolly monkeys.

   Syn: genus Lagothrix.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Lagothrix
    n 1: woolly monkeys [syn: Lagothrix, genus Lagothrix]