The Collaborative International Dictionary of English v.0.48:

Tarsius \Tar"si*us\, n. [NL. See Tarsus.] (Zool.)
   A genus of nocturnal lemurine mammals having very large eyes
   and ears, a long tail, and very long proximal tarsal bones;
   -- called also malmag, spectral lemur, podji, and
   tarsier.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Tarsius
    n 1: type and sole genus of the family Tarsiidae [syn:
         Tarsius, genus Tarsius]