_Midas weddellii_, Deville, Rev. et Mag. de Zool., 1849, p. 55.
_Midas devillii_, Is. Geoffr., Cat. Méth. Primates, p. 64 (1851);
Castelnau, Expéd. Amér. Sud, Mamm., pl. vi., fig. 2 (1855); Gray, Cat.
Monkeys Brit. Mus., p. 67 (1870).
_Midas leucogenys_, Gray, P. Z. S., 1865, p. 735; id. Cat. Monkeys Brit.
Mus., p. 67 (1870).
_Hapale devillei_, Schl., Mus. Pays Bas, vii., p. 262 (1876).
_Hapale weddelii_, Schl., t. c. p. 262.
CHARACTERS.--Fur of back ringed with grey; that of the head, neck, and
front of the fore- and hind-limbs, tail, hands, and feet black; loins,
thighs, legs, and base of tail bright maroon.
DISTRIBUTION.--Obtained by MM. Castelnau and Deville, at Sarayacu, in the
Peruvian Amazons.