THE HORNED SAPAJOTT. 217 



the thumb bears a better proportion, from its greater 

 length ; the palms of both fore and hinder extremities 

 are very sensible of touch. The general size is small, 

 the dispositions mild and playful ; the food chiefly fruit 

 and insects ; they are gregarious, and, generally speak- 

 ing, they may be said to supply the place of the 

 Guenons of the Old World. They embrace all the 

 remaining monkeys of the New World, which are 

 possessed of prehensile tails. 



The characters of this genus are. a facial angle of 

 about 60 ; head round, and the muzzle short ; the 

 tail prehensile, and entirely covered with hair. The 

 first species we shall mention is, 



THE HORNED SAPAJOU. 



Cebus fatuellus GEOFFROY. 



PLATE XXI. 



Simia fatuellus, Linnaeus. Sajoucornu, Cebus fatuellus, Geoff roy 

 Saint Hilaire,Annales du Museum, xix. p. 109 ; Desmaresf* 

 Mammalogie, p. 84. Le Sajou cornu male, et variete, Frederic 

 Cuvier, Histoire Naturelle des Mammiferes. 



THIS Sapajou, of grotesque figure, from the un- 

 usual direction of the hair upon the forehead, in 

 general form, will show the proportions of this genus. 

 Jt has been long known, and was established in the 



