Nyctipithecus trivirgatus

from The Collaborative International Dictionary of English v.0.48

Douroucouli \Dou`rou*cou"li\, n. (Zool.)
   A small, nocturnal, South American monkey of the genus
   {Aotus} (formerly {Nyctipithecus trivirgatus}), with large
   owl-like eyes; hence, the common name {owl monkey}. [Written
   also {Durukuli} and {dourikuli}.]
   [1913 Webster +PJC ]