220 Mr. J. E. Gray on the Howling Monkeys. 



II. Forehead with the hair directed forwards ; crown smooth with 

 radiating hairs. 



5. Ked and Yellow Howler, Mycetes auratus. 



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

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



Inhab. Brazils. 



We have an adult specimen which appears to be a female. It 

 is very like M. seniculus in colour and in the shortness and rigid- 

 ness of the fur, but differs in the hair being brown at the base, 

 like M. ursinus and M. laniger, and from all these species in the 

 direction of the rather short close-pressed hair of the forehead. 



6. Black Howler, Mycetes Caraya. Simia Caraya, Humb. Obs. 

 Zool. M. niger, Pr. Max. Abbild. 



Black; hair rather elongate and rigid, uniform black; the 

 sides, especially at the loins, with interspersed reddish hairs. 

 Inhab. Brazils. 

 "We have an adult male. 



7. Gray -handed Howler, Mycetes barhatus, Spix, Braz. t. 32 c?. 



Black ; circumference of the face, hands, feet, inside of the 

 thighs and end of the tail grayish ; hair moderately long, rather 

 rigid, uniform-coloured. 



Inhab. Brazils. 



An adult (sex doubtful, probably female). 



8. Yellow-handed Howler or Guariba, Mycetes Beelzehul. Simia 

 Beelzehul, Linn. M. rufimanuSj Kuhl, Diet. Sci. Nat. xlix. 

 M. discolor J Spix, Braz. t. 34 ? 



Black ; hands, feet, upper line and tip of the tail, spot in front 

 of the ears and on knee reddish yellow ; hairs rather soft, uni- 

 form black or reddish, with a few interspersed brown hairs on 

 the shoulders. 



Inhab. Brazils, Para. 



We have an adult and a half-grown female, and the very young 

 of the adult specimen. 



9. The Villose Howler, Mycetes villosus. 



Black ; hair very long, silky, uniform black, on the cheeks un- 

 der the ears brownish at the base. 



Inhab. Brazils. 



We have an adult specimen of this species, which is imme- 

 diately known by the abundance, softness and length of the hair ; 

 but unfortunately it is in such bad condition that we cannot be 



