12 AOTUS 



on upper parts. A white spot over each eye extending back upon the 

 head ; a broad black line on middle of forehead from nose to between 

 ears, and a narrow black line from corner of eye on each side of the 

 head bordering the white; upper parts mixed iron gray and russet 

 becoming more brownish on lower back ; cheeks and chin white, sides 

 yellowish brown ; outer side of limbs iron gray, sometimes tinged with 

 yellowish brown; inner side of limbs and under parts pale orange 

 ochraceous ; hands and feet dark grayish brown ; tail mixed ochraceous 

 rufous and black on basal half, remainder black. The hairs of tail 

 are all ochraceous rufous at base and this shows more or less through- 

 out the entire length. 



Measurements. Total length, 720; tail, 400; foot, 100; ear, 35. 

 Skull: total length, 64; occipito-nasal length, 61.5; Hensel, 44; zygo- 

 matic width, 40.5 ; intertemporal width, 33 ; extreme width of orbits, 

 45; height of orbits, 21 ; median length of nasals, 12; width of brain- 

 case, 35 ; distance from foramen magnum to interparietal, 11 ; width of 

 basioccipital between bullae anteriorly, 3.5 ; length of upper molar 

 series, 14 ; length of mandible, 41 ; length of lower molar series, 16. 



While similar in color to A. miriquouina, the present species 

 differs greatly in its cranial characters. The skull is much larger and 

 the braincase considerably longer, while the orbits are enormous, very 

 large even for these big eyed animals. 



Two specimens, a male and female were obtained by Mr. T. Stein- 

 bach in Central Bolivia and are now in the collection of the British 

 Museum. There was no difference in the colors of the sexes. 



AoTUS LANius Dollman. 



Aotus lanius Dollman, Ann. Mag. Nat. Hist , IV, 8th Ser., 1909, 

 p. 202; Allen, Bull. Am. Mus. Nat. Hist., N. Y., XXXI, 1912, 

 p. 95. 



fVOOLLY DOUROUCOULI. 



Type locality. Tolima Mountains; Toche River, Central Andes, 

 Colombia, South America. Type in British Museum. 



Genl. Char. Fur long, thick, soft, woolly ; tail bushy. 



Color. Spot over nose fan-shaped, black ; spot over each eye buff 

 extending backward in a narrow circular line on fore part of head, 

 becoming reddish on hind part, and a black line from corner of eyes 

 encircling the buff on sides of head but not extending on to the crown ; 

 crown, back of head, neck and dorsal region to rump red, hairs tipped 

 with golden; flanks and outer side of limbs paler, grizzled brownish 

 red ; hairs on shoulders and limbs tipped with white ; inner side of 



