ptilocercus

from The Century Dictionary.

• noun A genus of Tupaiidæ or elephant-shrews, containing a single species, P. lowei, of Borneo, having a long tail furnished with distichous hairs toward the end, like a pen or feather, whence the name; the pentails.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun pentails