_Nyctipithecus felinus_, Spix, Sim. et Vespert. Bras., p. 24, pl. 18
(1823); Is. Geoffr., Cat. Méth. Primates, p. 39 (1851); Gray, Ann. N. H.,
x., p. 256 (1842).
_Nyctipithecus oseryi_, Is. Geoffr. et Deville, C. R., xxvii., 1848, p.
498 (juv.); Geoffr., Cat. Méth. Primates, p. 39 (1851).
_Nyctipithecus commersonii_, Gray, Cat. Monkeys Brit. Mus., p. 58 (1870).
_Nyctipithecus vociferans_, Schl., Mus. Pays Bas, vii., p. 214 (1876;
part).
CHARACTERS.--Closely related to the last species, but differs in having the
three facial streaks irregular and combining together on the crown, the
middle one broad and lozenge-shaped; the frontal spots short, and white.
Fur longer and more woolly; neck, chest, under surface of body, inner sides
of the limbs, and the base of the tail yellowish; tail round.