736 CEBUS. 
Ateles, and without the naked under part of the distal portion of 
the tail; the pollex is well developed; tail long, curled at tip; hair 
on face short; whiskers present; no crest; canines large; last molar in 
both jaws the smallest. 
IBY AKO) Wiss SIP CWES. 
A. Fore part of head and body white. PAGE 
a. Female without elongated frontal tuft ...... C. hypoleucus 736 
b. Female with elongated frontal tuft........... C.imitator 737 
689. hypoleucus (Simia), Humb., Recueil, Obs. Zool. Anat. Comp., 
ie shoyimin rg Oye 2h M/s 
WHITE-THROATED CApucHIN. Mono carablanca. 
Type locality. Rio Sinu, Bolivar, Colombia. 
Geogr. Distr. Nicaragua to Colombia. 
Genl. Char. Tail long, haired throughout, pollex present. 
Fic. CXLII. CEBUS HYPOLEUCUS. 
Color. Skin of face flesh color; forehead, cheeks, sides of head 
to behind ears, chin, throat, sides of neck, chest and shoulders, ex- 
tending down arms below elbow, white; rest of body, limbs, hands, 
feet, and tail glossy black. 
Measurements. Total length, 1000; tail, 500; hind foot, 120 
(skin). Skull: occipito-nasal length, 86.5; Hensel, 61; zygomatic 
