Black-tailed marmoset (<i>Mico melanurus</i>). This individual has an uncommon white face.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/24256658@N06/">Tomoko Ichishima</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/24256658@N06/6131857863/">Flickr</a>