12 SIMIADJ?. — CEKCOPITHECUS. 



Cercopithecus tantalus. 

 a. Skull. From the Zoological Society's Collection. 



The Mona. Cercopithecus mona. 



Cervical vertebrae 7 



Dorsal 13 



Lumbar 7 



Sacral 3 



Caudal 26 



*a. Skull : young. Western Africa. 

 •b. Skull. Western Africa. 



c. Skeleton. From Mr. Warwick's Collection. 



d. Skeleton. From Mr. Cross's Collection. 



e. f, g. Skulls. From the Zoological Society's Collection. 

 h. Skeleton. 



The Diana. Cercopithecus diana. 



Cervical vertebra? 7 



Dorsal 12 



Lumbar 7 



Sacral 3 



Caudal (imperfect.) 



*<r. Skull. From the Zoological Society's Collection. 

 l>. Skeleton : young. 



The Moustache Monkey. Cercopithecus cephus. 



Cervical vertebra) 7 



Dorsal 12 



Lumbar 7 



Sacral 3 



Caudal 25 



a, b. Skulls : adult and young. 



c. Skeleton. 



d, e. Skulls : young. From the Zoological Society's Collection. 

 /. Skeleton. From the Zoological Society's Collection. 



The Black-cheeked Ascagne. Cercopithecus melanogenys. 

 *a. Skull : young. W. Africa. 



The White-nosed or Vaulting Monkey. 



Cercopithecus petaurista. 



Pithecus petaurista, Blainv., Ost. Atl. G. Pithecus, pi. 10 (teeth). 



Cervical vertebra? 7 



Dorsal 12 



