Source : Webster's Revised Unabridged Dictionary (1913)

Zati \Za"ti\, n. (Zo["o]l.)
   A species of macaque ({Macacus pileatus}) native of India and
   Ceylon. It has a crown of long erect hair, and tuft of
   radiating hairs on the back of the head. Called also {capped
   macaque}.

Source : WordNet®

capped macaque
     n : Indian macaque with a bonnet-like tuft of hair [syn: {bonnet
         macaque}, {bonnet monkey}, {crown monkey}, {Macaca
         radiata}]