7 i6 



PRIM A TES 



nails. The species are E. arachnoides, E. hemidactylus, and E. 

 hypoxanthus. 



Lagothrix. 1 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 Erwdes in 

 their fur and compressed nails, but differ in the more widely 



FIG. 341. The Black-handed Spider Monkey (Aides mdanochir). 

 From Proc. Zool. Soc. 1871, pi. 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 Geoffrey, Ami. du Museum, vol. xix. p. 106 (1812). 



