22 ( lEBIILB.— MYCETES. 



The Caparko or Negro Monkey. Lagothrix humboldtii. 



Sfcrix, Sim. Bras. tab. 37. fig. 7 (skull). 



Cervical vertebrae 7 



Dorsal 14 



Lumbar 4 



Sacral 3 



Caudal 30 



T r(. Skull. Brazils. 



b, c. Skulls. Brazils. From the Zoological Society's Collection. 

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



c. Skull. District of Quito. From Mr. Bates's Collection. 



MYCETES. 

 Teeth : — Incisors || ; Canines j=J ; Premolars |=| ; Molars j£f ;=36. 



The Golden Howler. Mycetes seniculus. 



Chenu, Encyclop. d'Hist. Nat. p. 181. fig. 150 (skull), fig. 149 (os 

 hyoide).- — Dahlbom, Zoologiska Studier, pi. 6. figs. 21, 216 (os 

 hyoide), 1857.— Audebert, Makis, p. 8. pi. 2. figs. 1, 2 (os hyoide), 

 pi. 2. fig. 4 (skull), 1801. 



Mycetes fuscus, Kuld. — Spix, Sim. Bras. pi. 38. fig. 8 (skull). 



Cervical vertebras 7 



Dorsal 14 



Lumbar 5 



Sacral 3 



Caudal 27 



*a. Skeleton : male. S. America. 



H, c. Skulls : male and female. Bolivia. From Mr. Bridges' Col- 

 lection. 

 d. Skull. Bio Negro. From Mr. Stevens's Collection. 



The Araguata or Brown Howler. Mycetes ursinus. 



Cervical vertebra? 7 



Dorsal 14 



Lumbar 5 



Sacral . . 3 



Caudal 19 (imperfect). 



*a. Skull. Brazils. 



b. Skull. 



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



d. e. Skulls. 



/. Skull : male. From Mr. Brandt's Collection. 



