716 PRIMATES 
nails. The species are £. arachnoides, E. hemidactylus, and E. 
hypoxanthus. 
Lagothriz..—Form rather robust; limbs moderate ; fur woolly ; 
pollex well developed ; tail distally naked beneath. 
The Woolly Monkeys differ from the preceding genera by the 
presence of a well-developed pollex. They resemble Eriodes in 
their fur and compressed nails, but differ in the more widely 
Fic. 341.—The Black-handed Spider Monkey (Ateles melanochir). 
From Proc. Zool. Soc. 1871, pl. 15. 
separated nares. The tail resembles that of the preceding genera. 
Speaking of these Monkeys Mr. Bates observes that “the Barrigudos 
are very bulky animals, whilst the Spider Monkeys are remarkable 
for the slenderness of their bodies and limbs. I obtained specimens 
of what have been considered two species, one (L. olivaceus ?) 
having the head clothed with gray, the other (L. humboldti, Fig. 
342) with black fur. They both live together in the same places, 
1 Geoffroy, Ann. du Muséum, vol. xix. p. 106 (1812). 
