ATELEUS. 175 



the median dorsal region overlaid with russet and black; a median 

 black line from between eyes to crown; narrow black lateral lines to 

 occiput; white spots above eyes; sides of neck grayish; underparts 

 pale ochraceous-buff; tail like upperparts above at base, root black; 

 beneath chestnut on proximal third, remainder black; hands and feet 

 black. Ex type in United States National Museum. 



Measurements. Total length, 683; tail, 400; foot, 90. Skull: 

 Greatest length, 60.9; Hensel, 39.8; zygomatic breadth, 37.5; inter- 

 temporal width, 5.2; mastoid width., 33.8; length of nasals, 10; pal- 

 atal length, 31.5; length of upper molar series, 14.8; length of 

 mandible, 37.3; length of lower molar series, 15.8. Ex type in 

 United States National Museum. 



Subfamily Cebinae. 



Genus Ateleus. 



Ateleus pan Schlegel. 



Ateles (!) pan Schlegel, Mus. Hist. Nat. Pays-Bas (Simia) 7, 

 1876, p. 180. 



Ateleus pan Elliot, Rev. Primates, II, 1913, p. 41. 

 Schlegel's Spider Monkey. 



Type locality. Coban, Guatemala. 



Geogr. Distr. Volcano of Orizaba, State of Vera Cruz, into Guate- 

 mala. 



Genl. Char. Similar to A. belzebuth, but the yellowish white on 

 inner side of arms and legs very restricted; no white on the cheeks. 



Color. Face black; head, shoulders, arms, hands, legs and feet 

 black or blackish brown; rump brown, hairs tipped with shining 

 golden; underparts yellow; reddish line on border of flanks; inner 

 side of arms to elbows and legs to ankles yellowish white ; tail brownish 

 black. Ex type in Ley den Museum. 



Measurements. Total length, 1.120; tail, 700; foot, 150. Skull: 

 Total length, 1.022; interorbital width, 57.1; occipito-nasal length, 

 99.3; Hensel, 66; zygomatic width, 63.5; median length of nasals, 

 15.4; palatal length, 27.6; length of upper molar series, 24.3; length of 

 mandible, 60; length of lower molar series, 27.4. Ex type in Leyden 

 Museum. 



Ateleus tricolor Hollister. 



Ateles (!) tricolor Hollister, Proc. Biol. Soc. Wash., XXVII, 1914, 

 p. 141. 



