178 THE KATTTBAL HISTORY OP 



somewhat irascible when handled. When pleased, 

 it dances on all-fours in a peculiar and measured step, 

 which is far from being ungraceful, although after a 

 time it becomes ludicrous from its regular monotony." 

 Two young specimens kept by F. Cuvier were mis- 

 chievous at a very early age; and though not defi- 

 cient in the penetration of their race, showed all the 

 impatience and caprice which characterise the true 

 Guenons. 



In Geoffroy's second subdivision of the Guenons 

 having the more elongated muzzle, and to which he 

 has applied the title of Cercocebus, will be seen, 



THE MANGABEY OR WHITE EYELID MONKEY. 



Cercocebus fuliginosus GEOFFROY. 



PLATE XII. 



Simla ethiops, Linnaeus. -White Eyelid Monkey, Pennant'* 

 Quadrupeds, 204. Mangabey, Buffon* Guenon enfumfe, 

 Desmaresfs Mammalogie, p. 62 ; Frederic Cuvier, Histoire 

 Naturelle des Mammiferes.^ Cercocebus fuliginosus, Geof- 

 frey, Annales du Museum, vol. xix. p. 97 



WE have placed this curiously-marked monkey first 

 in this subdivision, as possessing considerable alliance 

 in form to the preceding ; so much so, as to be by 

 some zoologists placed with it. We prefer Geoffroy's 



