310 SAIMIRJ 



b.' With black curved line in front of ears. 6". cassiqutarensis. 

 b. Forearms, hands and feet tawny; teeth large . . .S. macrodon. 



B. Head blue gray without yellow tinge 5". madeirce. 



C. Head golden yellow and black S. ustus. 



D. Head black or blackish. 



a. Upper parts grizzled yellow. 



a.' Forearms, hands and feet saffron yellow. 5". boliviensis. 

 b.' Forearms, hands and feet deep golden 



yellow 6". b. nigriceps. 



b. Upper parts ochraceous rufous 5". oerstedi. 



Saimeri sciureus (Linnaeus). 



Simla sciurea Linn., Syst. Nat., I, 1758, p. 19; I, 1766, p. 43: 



Bodd., Elench. Animal, 1784, p. 62. 

 Callithrix sciureus E. Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 



1812, p. 113; Casteln., Exped. Amer. Sud, Mamm., I, 1855, p. 



13. 

 Saguinus sciureus Less., Man. Mamm., 1827, p. 56. 

 Chrysothrix sciureus Kaup, Das Thierr., 1, 1835, p. 55 ; Wagn., 



Schreb., Saugth. Suppl., V, 1855, p. 120, pi. XIX; Huxley. 



Proc. Zool. Soc. Lond., 1861, p. 250; Gray, Cat. Monkeys, 



Lemurs and Fruit-eating Bats, Brit. Mus., 1870, p. 156 ; Sclat., 



Proc. Zool. Soc. Lond., 1880, p. 395 ; von Pelz., Kaiserl. 



Konigl. Zool.-Botan. Gesell. Wien, XXXVIII, 1883, p. 21 ; 



von Bardel, Proc. Zool. Soc. Lond., 1894, p. 359; Forbes, 



Handb. Primates, I, 1894, p. 156. 

 Pithesciurus saimiri Less., Spec. Mamm., 1840. p. 157. 

 Cebus sciureus Blainv., Osteog., 1841, Atl., Cebus, pi. VI. 

 Saimiri sciureus I. Geoff., Cat. Primates, 1851, p. 37; Dahlb., Stud. 



Zool. Fam. Reg. Anim. Natur., fasc. I, 1856, p. 157; Schleg., 



Mus. Pays-Bas, Simise, 1876, p. 242. 

 Saimiris sciureus Reichenb., Vollstand. Naturg. Affen, 1862, p. 15, 



figs. 44, 45. 

 Saimiri sciurea Elliot, Cat. Mamm. Field Columb. Mus., VIII, 



1906, p. 558, Zool. Ser. ; Thos., Proc. Zool Soc. Lond., 1911, 



p. 129. 



COMMON TITI MONKEY. 



Type locality. "India." 



Geogr. Distr. Northern South America in Venezuela (Schlegel) ; 

 Guianas, (English, Dutch and French), on the Amazon, and several 



