40 CEBIDiE. 



3. Mycetes bicolor. The Blaclc-and-yelhiv HoivJer. B. M. 



Black ; hair rather rigid, uniform ; sides of the loins varied with 

 yellow ; hairs of this part black, with a broad subcentral reddish- 

 yellow band. Male. 



Mycetes bicolor, Grmj, Ann. S) Mag. N. H. 1845, x-v-i. p. 214! 

 Hah. Brazil. 



Like M. se7iimlus. Dr. Slack thinks this may be the same as 

 M. xirshms. 



See Ahiatta nigra, Journ. Acad. Phil. 1862, 518. " Male deep 

 black ; hairs of occiput directed forwards, meeting at right 

 angles those of the forehead, which are dii-ected backwards. 

 Female and young pale straw-colour, dashed with black." 

 Hab. Brazil ; Paraguay. 



4. Mycetes laniger. The Sill-y Howler. 



Reddish chestnut ; middle of the back golden yellow ; hairs elon- 

 gate, very soft and silky, dark brown at the base, golden or chest- 

 nut at the tip, with a close underfur ; hair of the head rather 

 elongate. Males and females. 



Mycetes laniger, Gray, Ann. <§• Mag. JV. H. 1845, xvi. p. 214 ! 

 Var. End of tail paler. 



Stentor chrjsm-us, Is. Geoff. Mag. Zool. iv. t. 7. 

 Hah. Columbia. 



Dr. Slack (?. c. p. 517) considers this vmdoubtedly the same as M. 

 seniculus. 



5. Mycetes paUiatus. The Mantled Howler. B. M. 



Black brown ; hairs of the middle of the back and upper part of 

 the sides yeUow brown, with black tips ; of the lower parts of the 

 sides elongate, brownish yellow, forming a kind of mantle on each 

 side. 



Mycetes paUiatus, Graij, P. Z. S. 1848, p. 138, t. 6 ! M. Beelzebul, 

 Schott, Mittelvr Bqjort, 1862, p. 413. Aluatta palliata, Slack, 

 Journ. Acad. Phil. 1862, p. 510. 

 Hab, Caraceas, Salle. 



** Forehead with the hair directed forward ; crown smooth, with radiating 

 hairs. 



6. Mycetes auratus. The Eed-and-yellow Hoivler. B. M. 



Dark red chestnut- brown ; back and sides golden yellow ; hairs 

 rather short and rigid, dark at the base ; beard darker. Female ? 

 Mycetes auratus, Grag, Ann. S,- Mag. N. H. 1845, xvi. p. 220 ! 

 Hah. Brazil. 



