ACTUS 13 



limbs brownish gray ; chin and throat bufFy gray ; under parts of body 

 orange buff ; hands and feet black ; tail at base above and beneath red 

 like dorsal region, at root beneath chestnut, the red gradually merges 

 into black on apical third, though the hairs retain the red from the 

 roots to the tip. Ex type British Museum. 



Measurements. Total length, 710; tail, 370; foot, 80. Skull: 

 intertemporal width, 30.5; width of braincase, 32; Hensel, 41.3; zygo- 

 matic width, 38.8; median length of nasals, 14.1 ; palatal length, 17.5; 

 length of upper molar series, 16 ; length of mandible, 37.8 ; length of 

 lower molar series, 17; occipital region of skull gone. Ex type British 

 Museum. 



This species is remarkable for its thick woolly fur, suitable for an 

 animal dwelling upon high mountains. It is peculiar also in not having 

 the lateral black lines on head meeting in tlie rear, but stopping outside 

 of the crown. 



Mr. Frank M. Chapman during his Expedition to Colombia in 

 1911, obtained a flat skin of this species from a native on the Toche 

 River, Central Andes, Province of Tolima, at an elevation of approx- 

 imately 7,000 feet. 



AOTUS VOCIFEEANS (Spix). 



Nyctipithecus vociferans Spix, Sim. et Vespert. Bras., 1823, p. 25, 

 pi. XIX ; Less., Spec. Mamm., 1840, p. 171 ; Wagn., Abhandl. 

 Bay. Akad., V, 1848, p. 445 ; Wagn., Schreb., Saugth. Suppl., 

 V, 1855, p. 108; Reichenb., Vollstand. Naturg. Affen, 1862, 

 p. 20, fig. 53; Schleg., Mus. Pays-Bas, Simiae, 1876, p. 214; 

 Alston, Biol. Amer. Centr., I, Mamm., 1879, p. 14. 



Cebus vociferans Fisch., Syn. Mamm., 1829, p. 55. 



Nyctipithecus lemurinus I. Geoff., Compt. Rend., XVI, 1843, p. 

 1151 ; Id. Archiv. Mus. Paris, IV, 1844, p. 25, pi. XI ; Id. Voy. 

 Venus, 1840-1855, Mamm., t. 3, fig. 2; I. Geoflf., Cat. Pri- 

 mates, 1851, p. 39; Dahlb., Stud. Zool. Fam. Anim. Nat., 

 fasc. I, 1856, pp. 148, 149; Reichenb, Vollstand. Naturg. 

 Aflfen, 1862, p. 19, fig. 52; Gray, Cat. Monkeys, Lemurs and 

 Fruit-eating Bats, Brit. Mus., 1870, p. 58; Sclat., Proc. Zool. 

 Soc. Lond., 1872, p. 3. 



Nyctipithecus trivirgatus Tschudi, Faun. Peruan., 1844, p. 49, (nee 

 Humboldt). 



Aotus vociferans Elliot, Mamm. Middle Amer. and W. Indies, 

 F. C. M. Pub., IV, Pt. II, 1904. p. 729, Zool. Ser. ; Id. Check- 



