220 Mr. J. i. Gray on the Howling Monkeys. 
Il. Forehead with the hair directed forwards ; crown smooth with 
radiating hairs. 
5. Red and Yellow Howler, Mycetes auratus. 
Dark red chestnut-brown ; back and sides golden yellow ; haus 
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 m colour and in the shortness and rigid- 
ness of the fur, but differs im 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 lois, with mterspersed reddish hairs. 
Inhab. Brazils. 
We have an adult male. 
7. Gray-handed Howler, Mycetes barbatus, Spix, Braz. t.32 2. 
Black ; circumference of the face, hands, feet, mside 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 Beelzebul. Simia 
Beelzebul, Linn. M. rufimanus, Kuhl, Dict. Sa. Nat. xlix. 
M. discolor, Spix, Braz. t. 34? 
Black ; hands, feet, wpper 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 anda 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 
