40 CEBID/E. 



1. Lagothrix Humboldtii. The Ore;/ Capparo. B. M. 



Blackish grey ; hairs dark gray, with very short black tips ; head, 

 chest, belly, hands, and tail black ; hair of the belly rather longer, 

 weaker. Young greyer. 



Lagothrix Humboldtii, Geoffroy, Tab. Quad. Celms lagotln-ix, 

 Fischer. Simialagotricha, Humboldt, Obs. Zool. i. p. 322. L. canus, 

 Geoff. Tab. Quad. Simla cana, Ilumb. 



Far. ? L. poeppigii, Schinz, L. capparo, Lesson. Gastrimargus oliva- 

 ceus, SpiXf Bras. t. 28 (male, good), 1823. 



Ilab. Peru ; mouth of Orinoco ; Columbia. 

 The young arc paler and less speckled. 



2. Lagothrix infumatus. The Reddish Capparo. B. M. 



Dark reddish grey; hairs reddish, with black tips ; tho head and 

 hands rather darker ; inside of forearms, chest, and belly black ; 

 groin, base of the tail, and sides redder ; hair of chest and belly 

 abundant, long, and rather rigid. Male. 



Gastrimargus infumatus, Spin; Bras. p. 41, t. 29, female. Lagothrix 

 Castelnaui, Is. Geoff'. Castelnau Expid. Amer. Sud, t. i. female. 



Ilab. Brazil. 



Section II. Titicniuiu. Tail lone/, hairy to the end, not, or only 

 feebly prehensile. Tongue-bone not prominent. Head round. 

 Muzzle short. 



Tribe III. CEBINA. 



Grinders $-.$, bluntly tubercular ; cutting-tocth erect, contiguous 

 to the canines ; canines large. Lower jaw not dilated behind. Limbs 

 proportionate. The septum of the orbits bony. Tail very long, hairy ; 

 end convolute. Penis with an expanded marginal gland. Grega- 

 rious, lively, wanton. Living on fruit and insects. 



5. CEBUS. 



The character of the tribe. 



Cebus (pnrtly), Erxl. 

 In Burmeister's Monograph in Abb. naturf. Ges. zu Halle, vol. ii., 

 he divides the genus thus : — 



* Lumbar vertebra; 5. Head large. 



Cebus fatuellus, Linn. S. Apella, Linn. ; Buffon, xv. t. 4. C. 

 frontatus, Kuhl. (Old) S. fatuellus, Linn. ; Bufibn, Supp. vii. 

 t. 29. ? G. niger, Geoff. C. lunatics, Kuhl. C, Azarce, ltengger. 



Cebus bobustus, Pr. Max. (Old) C. cirrifer, Geoff. 



