170 ALLEN’S NATURALIST’S LIBRARY. 
IV. AZARA’S DOUROUCOLI. NYCTIPITHECUS AZAR. 
Simia asareé, Humb., Obs. Zool., p. 359 (1811). 
Pithecia miriquouina, Geoffr., Ann. Mus., xix., p. 117 (18142) ; 
Kuhl, Beitr., p. 43 (1820). 
Nyctipithecus azare, Schl., Mus. Pays Bas, vii., p. 212 (1876). 
Characters—A large rhomboidal black patch between the 
two large superciliary spots, the two acute angles of which are 
prolonged, the one under the base of the nose, the other in the 
median line to the top of the head; the inner side of the 
limbs, the under side of the body, throat, and chin of a 
reddish-ochre colour. 
Distribution.—The right bank of the River Paraguay, in the 
north-east of the Argentine Republic, but not in Paraguay 
proper. 
V. THE FELINE DOUROUCOLI. NYCTIPITHECUS FELINUS. 
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 oseryt, Is. Geoffr. et Deville, C. R., xxvii, 1848, 
p. 498 (juv.) ; Geoffr., Cat. Méth. Primates, p. 39 (1851). 
Nyctipithecus commersontt, Gray, Cat. Monkeys Brit. Mus., 
p- 58 (1870). 
Nyctipithecus vociferans, Schl., Mus. Pays Bas, vil., 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. 
