28 CEBID.E. JACCHUS. 



The Vitoe. Nyctipithecus felinus. 



LsicL Geoff., Voy. de la Venus, pi. 3. figs. 10-13 (skull). 



Cervical vertebrae 7 



Dorsal 13 



Lumbar 6 



Sacral 3 



Caudal 18 



*a. Skull. Santa Fe de Bogota. 



*b. Skull. Bolivia. From Mr. Bridges' Collection. 



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



d. Skull. District of Quito ; Bio Napo. From Mr. Stevens's Col- 



lection. 



The Douroucouli. Nyctipithecus trivirgatus. 



Cebus trivirgatus, Blaiin:, Ost. Atl. G. Cebus, pi. 6 (skull). 



The Hairy Vitoe. Nyctipithecus villosus. 

 *a. Skull. Santa Fe de Bogota. 



Nyctipithecus lemurinus. 

 Isid. Geoff., Voy. de la Venus, pi. 3. figs. 3-9 (skull). 



JACCHUS. 



Teeth : — Incisors || ; Canines tj ; Premolars |f? ; Molars |f? ;=32. 



The Pinche. Jacchus cedipus. 



Hapale cedipus, Blainv., Ost. Atl. G. Cebus, pi. 4 (skeleton). 



Cervical vertebras 7 



Dorsal 13 



Lumbar 6 



Sacral 3 



Caudal 33 



a. Skull. Brazils. 



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



The Bed-Bellied Marmoset. Jacchus rufiventer. 

 *a. Skull. South America. 



The Marmoset. Jacchus vulgaris. 



Owen, Odont. p. 114. fig. 8 (teeth), 1840-5. 



Cervical vertebrae ~ 



Dorsal 13 



