106 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, hy 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 y 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 



7 * O 



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- 



