ventriloquist monkey

from The Collaborative International Dictionary of English v.0.48

Onappo \O*nap"po\, n. (Zool.)
   A nocturnal South American monkey ({Callithrix discolor}),
   noted for its agility; -- called also {ventriloquist monkey}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Ventriloquist \Ven*tril"o*quist\, n.
   One who practices, or is skilled in, ventriloquism.
   [1913 Webster]

   {Ventriloquist monkey} (Zool.), the onappo; -- so called from
      the character of its cry.
      [1913 Webster]

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