2G8 SSTNOPSIS OF THE SIMIADJJ. 



sieyarating and falling down in front; ^eartfless 

 Inhabits French Guiana. 



4. P. MONACHUS, the Monk Moine, Geoff. Ann. du Mus. 

 xix. p. 116. Simia monachus, Humb. Obs. Zoo/. L p. 

 359. Saki moine, Desm. Mamm. p. 91. Varied with 

 spots of brown and dusky-yellow ; hair of the head elon- 

 gated ; tail as long as the body. Inhabits Brasil. 



5. P. MIRIQUOUINA, the Miriquouina Miriquouina Azara, 

 Hist, of Parag. ; Geoff. Ann. du Mus. xix. p. 117. 

 Simia Azarae, Humb. Obs. Zoo/, i. 359. Saki miriquouina, 

 Desm. Mamm. p. 90. Gray ; underneath reddish ; hairs 

 on the back ringed with black and white ; a white spat 

 above each eye. Inhabits the province of Chaco, and the 

 south bank of the river Paraguay. 



6. P. LEUCOCEPHALA, the Yarke __ Yarke, Buff. Simia 

 leucocephala, Humb. Obs. Zoo/, i. p. 359. Pithecia 

 leucocephala, Geoff. Ann. du Mus. xix. p. 117. Saki 

 yarque, Desm. Mamm. p. 91. Black, with the head 

 whitish ; tail nearly the length of the body. Inhabits 

 Guiana. 



PLATE XXVI 7. P. MELANOCEPHALA, the Cacajao. Sirnia 

 melanocephala, Humb. Obs. Zoo/, i. p. 359. Cacajao, 

 Humb. ; Geoff. Ann. du Mus. xix. 117. Saki cacajan 

 Desm. Mamm. p. 91. Hair yellowish-brown; head and 

 tip of the tail black ; tail, a sixth of the length of the 

 body. Inhabits the forests bordering the Cassiquaire and 

 Negro. 



8. P. RUFIBARBA, Red-bearded saki. Saki a moustach, 

 rouses, Desm. Mamm. p. 90. Upper part of the bodv 

 brownish-black, under part pale-red ; eyebrows reddish ; 

 tail slender toward the tip. Inhabits Surinam. 

 Described by Kuhl, from Temmink's Collection. 



9 P. OCHROCEPHALA, Yellow-headed saki Saki a teta 

 jaune, Desm. Mamm. p. 90. Hair above of a clem- 



