MONKEYS. 81 



limit of the South American Quadrumana. Peru being often loosely given as the locality of some 

 of the species, it seems to have been taken for granted that the range of such species extended over 

 the whole of Peru on both sides of the Andes. Now the truth is, that when Peru is given as a 

 habitat of Monkeys, it is that part of Peru which lies east of the Cordillera that is meant. I 

 can find no evidence of any monkey having been found west of the Andes, until, going north- 

 wards, we reach Guaj^aquil. Tschudi describes twenty-two species as found in Peru, but ho 

 carefully defines the different regions in which all his species are found, and the whole twenty- 

 two occiu- only in the forest region east of the Cordillera. Mr. Fraser, also, than whom there can 

 be no better authority, assures me that west of the Andes none are to be found south of Gua- 

 yaquil. One or two species occur to the north of it, but he neither met with, nor heard of any 

 further to the south between the Andes and the Pacific. 



HapalidvE — Marmosets. — The other South American family, the tiny Marmosets, Ha pale, 

 (Arctopitheci of older authors, i.e., bear-like monkeys), about as numerous as the preceding group, 

 inhabit the same regions ; a few are recorded from Guiana and Surinam, but by much the greater 

 number of species is found in Brazil, which seems to be their metropolis ; some are also found in 

 Eastern Peru. These little creatures live together in numerous troops in the great foiests. They 

 feed on fruits and insects, and have much of the habits of squirrels. 



