28 CEBID.Z.—JACCHUS. 
The Viroz. Nyctipithecus felinus. 
Tsid. Geoff., Voy. de la Vénus, pl. 3. figs. 10-13 (skull). 
Cervical vertebra..........066- 7 
DOr eid eed nates Ree eee ee AS 13 
Dam Dats yack ed headed Sere aes 6 
DACTAL “sa, Raedary Aeteiae es HORE We 3 
atid: <ayid hein vera ace das 18 
¥*q. Skull. Santa Fé de Bogota. 
*b, Skull. Bolivia. From Mr. Bridges’ Collection. 
c. Skeleton, From the Zoological Society’s Collection. 
d. Skull. District of Quito; Rio Napo. From Mr. Stevens’s Col- 
lection. 
The Dovrovcoutt. Nyctipithecus trivirgatus. 
Cebus trivirgatus, Blainv., Ost. Atl. G. Cebus, pl. 6 (skull). 
The Harry Vitor. Nyctipithecus villosus. 
*a, Skull. Santa Fé de Bogota. 
Nyctipithecus lemurinus. 
Isid. Geoff., Voy. de la Vénus, pl. 3. figs. 3-9 (skull). 
JACCHUS. 
Teeth :—Incisors =; Canines 7; Premolars *2; Molars $5 = 82. 
The Pincur. Jacchus cedipus. 
Hapale cedipus, Blainv., Ost. Atl. G. Cebus, pl. 4 (skeleton). 
Cervical vertebra .............. 7 
Dorsal): as chose ceva oanmbenweaamaace 13 
Ti Dak as ik oes wach dk oy Fe ORS 6 
Sarah, 6 ccsse des Way es cg aes 3 
Caudal 0iyacespan eae bee 383 
a. Skull.  Brazils. 
b. Skeleton. From the Zoological Society’s Collection. 
The Rep-Brttrep Marmoset. Jacchus rufiventer. 
*q, Skull. South America. 
The Marmosrr. Jacchus vulgaris. 
Owen, Odont. p. 114. fig. 8 (teeth), 1840-5. 
Cervical vertebree.............. f 
Dorsal .......... aeear es wet LS 
