16 AOTUS ^ 



series, 13.5 ; mandible, 35 ; length of lower molar series, 15.3. Ex type 

 in American Museum of Natural History in New York. 



This species, while resembling somewhat A. vociferans, differs 

 in being darker on the upper parts and especially in the gray arms 

 and legs, the hairs buff tipped ; and the black lines on sides of the head 

 go to the occiput. Two examples were collected by Mr. Carriker in 

 the mountains near the coast in Santa Marta ; and two from the Rio 

 Sinu Cerete, west of the mountains, Colombia, collected by Mrs. E. 

 L. Kerr. 



AoTUS TRiviRGATUs (Humboldt) • 



Simia (Aotus) trivirgata Humb., Rec. Obser. Zool., I, 1811, p. 28. 



Aotus trivirgatus Illig., Prodr. Syst. Mamm. Av., 1811, p. 71 ; E. 

 Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 1812, p. 115. 



Cebus trivirgatus Fisch., Syn. Mamm., 1829, p. 55 ; Blainv., 

 Osteog., 1841, Atl., Cebus, pis. Ill, VI. 



Nyctipithecus trivirgatus E. Geoff., Cours Hist. Nat. Mamm., 

 1828, p. 19, lOme Legon ; F. Cuv., Hist. Nat. Mamm., 2me ed., 

 1833, p. 166, pi. LXVIII ; Wagn., Schreb., Saugth. Suppl., I, 

 1840, p. 226; V, 1855, p. 106; I. Geoff., Archiv. Mus. Hist. 

 Nat. Paris, IV, pp. 24, 28; Gray, Ann. Mag. Nat. Hist., X, 

 1st Ser., 1842, p. 256; /rf. List Spec. Mamm. Brit. Mus., 1843, 

 p. 14; Wagn., Wiegm., Archiv., 2nd Part, 1843, p. 21; 1846, 

 p. 136; Reichenb., Vollstand. Naturg. Affen, 1862, p. 17, figs. 

 47, 48; Bates, Nat. River Amaz., 1862, p. 316; Gray, Cat. 

 Monkeys, Lemurs and Fruit-eating Bats, Brit. Mus., 1870, 

 p. 58; Schleg., Mus. Pays-Bas, Simiae, 1876, p. 213; Forbes, 

 Handb. Primates, I, 1894, p. 168; von Pelz, Kaiserl-Konigl. 

 Zool.-botanische Gesellsch. Wien, XXXIII, 1883, p. 18. 



Nyctipithecus douroucouli Less., Spec. Mamm., 1840, p. 169. 



THREE-BANDED DOUROUCOULI. 



Type locality. Banks of the Cassiquiare near the headwaters of 

 the Rio Negro. 



Geogr. Distr. Guiana, Upper Amazon region, Brazil. 



Genl. Char. Three separate distinct black streaks on head, going 

 to occiput. Skull narrowing towards occiput, and the posterior outline 

 of braincase rounded ; palate wide, narrowing but slightly anteriorly 

 between canines. 



Color. General hue dark gray with a silvery lustre caused by the 

 white tips of the hairs ; three black stripes on head from forehead to 

 occiput ; spots over eyes whitish, sometimes ochraceous buff ; dorsal 



