53 CEBIDiE. 



* Tail cylindrical, hair short. 



1. Nyctipithecus trivirgatus. The DouroucoulL B. M. 



The black streaks on the crown distinct, linear ; frontal spot elon- 

 gate, yellowish ; fur short ; throat and insido of limbs greyish ashy ; 

 chest and belly ferruginous ; tail slender, cylindrical, blackish brown, 

 yellowish brown at the under part at the base. 



Simia trivirgata, Humboldt. Nyctipithecus trivirgatus, Gray, Ann. 

 and May. N. II. x. p. 25G, 1842 ! N. Humboldtii, S'chinz. N. 

 Oseryijj I. Geoff. Cat. p. 2; Castelnau, Exped. Amir. Sud, t. 2. f. 1. 

 N. vociferans, Spix, Bras. t. 2, 1823. 



Eab. Peru. 



2. Nyctipithecus Commersonii. The Vitoe. B. M. 



Black facial streaks irregular and rather confused ; side ones linear; 

 the middle one broad, lozenge-shaped ; frontal spots short, white ; fur 

 rather long, thick ; neck, chest, belly, and inner part of base of limbs 

 and tail fulvous ; tail cylindrical. 



Nyctipithecus folinus, Spiv, Bras. t. 18 (good), 1823; Is. Geoff. Cat. ; 

 Gray, Ann. 8f Mag. N. II. 1842, x. p. 250 ! Chirogaleus Com- 

 mersonii, Vigors and Horsfield, Zool. Journ. iv. p. 112, 1829 ! 

 Callithrix infulatus, Licht. ; Kuhl. Noctliora trivirgata, F. Cuv. 

 Mamm. Lith. t. 



Hob. Brazil. 



* * Tail depressed, broad ; hair of tail spreading on the sides like a squirrel. 



3. Nyctipithecus lemurinus. The Broad-tailed Vitoe. B.M. 



Head with a rounded white spot over each eye ; frontal streaks 

 indistinct ; fur of body and tail elongate ; tail bushy. 



Nyctipithecus hirsutus, Gray, List Mamm. B. M. 1842 ! N. lemu- 

 rinus, Is. Geoff. Mim. Ac. II. de VInstitut, 3843, p. 178; Voy. Venus, 

 Mamm. t. 3. f. 2. N. felinus, var., Gray, List Mamm. B. M. 1842 ! 



Hob. Columbia ; Santa Fe de Bogota. 



Tribe VI. PITIIECINA. 



Grinders |.$. Lower cutting-teeth large, shelving forward, con- 

 verging, separated from tho caninos by a space. Lower jaw not di- 

 lated behind. Fur harsh, elongate. Claws bent. Nostrils far 

 apart. 



9. PITHECIA. 



Chin with a broad beard. Crown with a radiated divided wig. 

 Head and neck short. Tail long, covered with long hair. Canines 

 strong. Septum of the nose broader than the cutting-teeth. Ears 

 moderate. Gregarious, slow, sad, voracious, vociferous. 



