SAIMIRI 309 



1872. Reinhardt, Naturhistoriske Forening, Kjohenhaven. 



Saimiri cerstedi described as Chrysothrix oerstedi. 

 1876. Schlegel, Museum des Pays-Bas, Simicc. 



In this catalogue four species are recognized under the genus 



Saimiri: S. sciureus; S. lunulatus = S. cassiquiarensis ; S. 



CERSTEDI ; and 6". entomophaga = S. boliviensis. S. ustus 



Geoff., is considered the same as S. sciureus. 

 1904. Thomas, in Annals and Magazine of Natural History. 



Saimiri cerstedi redescribed as Saimiri cerstedi citrinellus. 

 1907. Elliot, (D. G.) in Annals and Magazine of Natural History. 



Saimiri macrodon described. 



GEOGRAPHICAL DISTRIBUTION OF THE SPECIES AND SUBSPECIES. 



The range of the various species is as yet but imperfectly known 

 for several have been obtained only from a few localities, and some 

 indeed from only one, and those given heretofore by previous writers 

 are to some extent misleading as more than one species have been 

 confused together and the separate ranges united. The most northern 

 distribution of members of this genus is in Central America where S. 

 cerstedi is found from south of the Herradura Mountains to Panama. 

 In northern South America S. sciureus is met with in the three 

 Guianas, Venezuela and Colombia, and to the south on both banks of 

 the Amazon and some of its tributaries as the Rio Negro, Rio Uaupe, 

 Rio Javari, (Schlegel), etc., and in the Province of Goyas, Brazil. S. 

 cassiquiarensis ranges from the banks of the Orinoco south of the 

 Cataracts to the Rio Cassiquiare, and in the forests through which the 

 Rio Caura flows above the rapids of Mura, and thence westward to 

 the Rio Copataza in Ecuador. From Humayta, middle Rio Madeira, 

 also in Ecuador, S. m.\deir^ has been procured. On the banks of the 

 Ucayali, Peruvian Amazons, 5". ustus is found and at Cosnipata in 

 eastern Peru, S. b. nigriceps is met with. S. macrodon has been 

 obtained from the banks of the Rio Copataza in Ecuador; and from 

 those of the Rio Juara, and from Marcopata in Peru. S. boliviensis 

 occurs in the Sierras Guarayas, Bolivia. 



KEY TO THE SPECIES AND SUBSPECIES. 



A. Head gray with a yellowish brown tinge. 



a. Forearms, hands and feet ochraceous, teeth small. 



a.' Without black curved line in front of ears.. .5. sciureus. 



