lyo LLOYDS NATURAL HISTORY. 



IV. azara's douroucoll nyctipithecus azar^. 

 Si/nia azaj'cE, Humb., Obs. Zool., p. 359 (181 1). 

 Pithecia iniriquouina, Geofifr., Ann. Mus., xix., p. 117 (1812); 



Kuhl, Beitr., p. 43 (1820). 

 Nyctipithecus azarce, 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, pi. 18 



(1823); Is. Geoffr., Cat. Meth. Primates, p. 39 (185 1) ; 



Gray, Ann. N. H., x., p. 256 (1842). 

 Nyctipithecus oseryi^ Is. Geoffr. et Deville, C. R., xxvii., 1848, 



p. 498 (juv.); Geoffr., Cat. Meth. 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. 



