2. ATELES. 41 
7. Mycetes caraya. The Black Howler. . BM. 
Black; hair rather elongate and rigid, uniform black; the sides, 
especially at the loins, interspersed with reddish hairs. Male. 
Simia caraya, Humboldt. Mycetes caraya, Lesson; Gray, Ann. & 
wee N. H. 1845, xvi. p. 220! yeetes niger, Pr. Maz. 
ld. te 
Hab. Brazil, 
8. Mycetes barbatus. Zhe Grey-handed Howler. B.M. 
Black ; hair moderately long, rather rigid, one-coloured ; hands, 
feet, inside of the thighs, circumference of the face, and end of the 
tail greyish. Sex unknown. 
Mycetes barbatus, Spir, Bras, t. 33 (male); Gray, Ann. & Mag. N. 
H, 1845, xvi. p. 220! 
Hab. Brazil. 
9. Mycetes Beelzebul. The Yellow-handed Howler. B.M. 
Black ; hair rather soft, uniform black or reddish, with a few in- 
terspersed brown hairs on the shoulders; feet, upper line and tip of 
the tail, spot in front of the ear, and on the knee reddish-yellow. 
Females and young. : 
Simia Beelzebul, Zinn. Mycetes rufimanus, Kuhl. M. Beelzebul, 
Gray, Ann. & Mag. N. H. 1845, xvi. p. 220! ? M. discolor, Spiz, 
Bras. t. 34. Colobus?? chrysurus, Gray, Ann. §& Mag. N. H. 
1866, xvii. p. 77. 
Had. Brazil, 
10. Mycetes villosus. The Villous Howler. B.M. 
Black ; hairs very long, silky, uniform black on the cheeks and 
under the ears, brownish at the base. Sex unknown. 
' Mycetes.villosus, Gray, Ann. §& Mag. N. H. 1845, xvi. p. 226 ! 
Hab. Brazil. 
Tribe II. LAGOTRICHINA. 
Head round, face perpendicular. Canines small. Throat not 
swollen. Hinder part of the lower jaw not, or only moderately, 
dilated. Melancholic, slow, living in groups. Eating insects and 
fruit. 
A. Fur dry, harsh. Hair on the head directed forward. Lower jaw not 
dilated behind. 
2, ATELES. 
Fur dry, hard, smooth. Cutting-teeth large, unequal, two middle 
very long and broad. Grinders small, rounded. Thumb rudimentary, 
