_Cercopithecus buettikoferi_, Jentink, Notes, Leyd. Mus., viii., p. 56
(1886); Sclater, P. Z. S., 1893, p. 244.
CHARACTERS.--Büttikofer's Guenon agrees in all respects with _C.
petaurista_, but wants the black band from ear to ear round the vertex. Of
this band "there is no trace, in a series of eight specimens, containing
adults and young, males and females" (_Jentink_). Irides brown.
DISTRIBUTION.--West Africa: Liberia.