196 ORDER II. 



watching our camp and night fires. The next genus 

 of this sub-division, is that of 



NYCTIPITHECUS, or Night Monkeys, improperly 

 named Aotus, or Earless, by Illiger, those organs 

 being only concealed in the hair ; they have round 

 heads, and very large nocturnal eyes, approximating, 

 by these characters, the Loris of the Old Continent. 



Humboldt first introduced a species to the notice 

 of naturalists, named Douroucouli, and others have 

 since been added by Spix. 



The last genus is by some raised to a family, and 

 named Hapale and Hapalidce, because it has, like 

 the apes of the Old Continent, only thirty-two teeth, 

 and, unlike any of the Simiadce, claws on the fingers 

 and thumbs of the forehands, and nails only on the 

 thumbs of the hinder hands. They form two sub- 

 genera : 



The Hapale proper, or Jacchus marmousets, and 

 Midas, or Tamarin marmousets ; the former having 

 a more bushy tail, and with the lower incisor teeth 

 in a curved line ; and the latter with the tail more 

 slender, and the lower incisors in a straighter line : 

 both are known by the name of Wistitis, and all are 

 beautiful little animals. 



In the last family of Quadrumana, are placed 

 The LEMURIDJE or Makis, whose form approaches 

 more nearly to quadrupeds, with a more pointed 

 snout, a rather woolly fur, and claws on the first 

 finger of the hinder hand, sometimes on the second 

 finger ; flat nails on all the others, and thumbs per- 



