CLASS I. MAMMALIA: ORDER 2. QUADRUMANA, 



107 



hem. They live on insects, and especially spiders, which they catch with admirable dexterity 

 like with their hands and their lips. 



The species of this genus are the Tee-tee, or Squirrel Monkey, S. sciureus, of Guiana and 

 irazil ; the S. ustus, of Brazil; and the S. entomophagus, found in troops in Bolivia and Peru. 

 I. Geoffroy mentions another species under the name of the Orinoco Ti-ti, S. lunulaius. 



Genus NYCTIPITHECUS : Nyctipithecus. — These are about ten to twelve inches long, and are 

 istinguished by a large round head, and eyes that give out phosphorescent light in the darkness, 

 hey sleep by day and are active at night, and hence are called Nocthores, or Night Monkeys, by 

 rench authors. They live in hollow trees, and do not gather in bands. They are found in Brazil. 



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THE DOUROUCOULI. 



The best known of this genus is the Douroucouli Monkey, N. trivirgatus. Its general color is 

 ray : its body and head measure ten inches. It lives on the borders of the Orinoco, and is noc- 

 •lrnal in its habits. Tt is sad of aspect, and solitary in its disposition. It passes the day in sleep, and 



