56 MAMMALIA. QUADRUMANA. 



Fur gray above ; reddish yellow below ; with a large white spot 

 surrounded with black above the eyes ; origin of the tail of a 

 reddish yellow colour,, its extremity black. -Inhabits Brazil. 



Gen. 14. AOTUS, Humb. Geoff. Illig. 



Dental formula same as last genus ; head round and very large ; 

 muzzle short ; eyes very large and approaching ; nostrils se- 

 parated by a very thin partition ; ears small ; tail as long as 

 the body, not prehensile, and covered with hair ; hands pen- 

 tadactyle, nails flat. 



A. trivirgatus, Geoff. Humb. The Douroucouli. Fur ash-colour- 

 ed ; belly of a reddish yellow ; with three brown and parallel 

 lines extending from the forehead to the occiput. About nine 

 inches long ; tail longer than the body. Griff. Quad. t. 14. 

 Inhabits thick forests near Maypura and Esmeralda in South America. It lives 



solitary upon trees, passes the day in sleeping, and seeks its food during the night. 



It feeds on insects, which it catches with much address, little birds, and fruits. It 



is monogamous. 



Gen. 15. PITHECIA, Desm. Cuv. Geoff. Simla, Lin. 



Incisors f , canines J-J, molars f-f , = 36. Incisors approach- 

 ing, the upper ones oblique and the broadest; canines strong, 

 triquetrous ; partition of the nostrils broader than the row of 

 the upper incisors ; head round, muzzle short ; facial angle 

 about 60 ; ears rounded ; tail a little longer than the body, 

 not prehensile, and furnished with long hair ; feet pentadac- 

 tyle ; nails short and armed. 



These are nocturnal animals living upon trees, which they seldom quit, and which 

 furnish them with fruits and insects, their habitual food. Inhabit Brazil, the GUI- 

 anas, and Paraguay. 



P. Satanas, Geoff. Desm. (Cebiis Satanas, Hoffm.) The Couxio. 

 Fur of a brown black in the male ; of a reddish brown in the fe- 

 male; thick locks covering all the head and falling upon the fore- 

 head; a well furnished beard; tail nearly the length of the body. 

 About 16 inches long. Inhabits the banks of the Orinoco. Humb. 

 Obs. t. 27- 



P. chiropotes, Desm. Geoff. Fur reddish chestnut; hair of the head 

 thick,, separated in the middle, and rising in two distinct tufts 

 on each side of the head ; a long and bushy beard. Size of the 

 preceding. Inhabits the deserts of the Upper Orinoco. Habit 

 solitary. It drinks in the hollow of its hand, from whence the 

 specific name chiropotes given by Humboldt. 



P. ntfiventer, Desm. (Simia pithecia, Lin.) Fox Tailed Monkey. 

 Fur reddish brown ; belly red ; the hair brown at its origin, and 

 annulated towards the end with red and brown : locks radiating 

 from the vertex, and falling upon the forehead ; no beard ; tail 

 nearly the length of the body. Size of the preceding. Inhabits 

 French Guiana Sharv, i. t. 25. 



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