THE SAPAJOUS, OR CAPUCHIN MONKEYS 151 



color being blackish, but that on the cheeks and temples is yellowish white. It is 



this light hair on the cheeks that gives its distinctive name to the species. The 

 head is relatively large. 



THE BROWN SAPAJOU (Cebus fatudlus) 



In Guiana the sapajous are represented by a species commonly known as the 

 brown sapajou, which presents a certain variation due either to differences of age, 



THE HORNED SAPAJOU AND THE WEEPER SAPAJOU. 

 (One-sixth natural size.) 



or to individual peculiarity, in regard to the form of the hair on the head, which 

 has led to the supposition that there were two distinct species. In one of these 

 forms, as represented in the upper right-hand figure of the cut on p. 149, the 

 hair on the crown of the head is nearly flat, and directed backwards; this form 

 having been described as C. apella. In the other variety, as shown in the left-hand 

 figure of the accompanying engraving, the hair on the sides of the crown of the 

 head is lengthened, so as to form a pair of more or less distinct longitudinal crests ; 

 this variety being hence known as the horned sapajou. 



