SYNOPSIS OF THE 



73. 6 S. BL Niger (The Caraya). Fui- fine black in the 

 males ; with the sides and lower part of the body yellow on 

 the young and females. 



Stentor niger, Geoff. Ann. Mus. xix. 108. Mycetes 

 niger, Desm. Mamm. 79. 



Caraya, Azara, Quad. Parag. vii. 208. Humboldt, sp. 11. 



Icon, — ■— 



Inhabits Paraguay, Bahia, and the interior of Brazil. 



74. 7. S. M. Rufimanus (the Red-handed Howler). Black, 

 hands and end of the tail red, face and lower part of the 

 body naked. 



Mycetes rufimanus. Kuhl. MSS. Desm. Mamm. 79. 

 Icon. 



Inhabits . Formerly Bullock's Museum, now in M. 



Tem mi nek's. 



IV. Cebus, Erxleben. Facial angle 60° ; head round, 

 muzzle short, the os hyoides not prominent; tail prehensile, 

 hairy at the lower part of the end *. 



75. 1. S. C. Robustus. Fur brown, upper part of the head, 

 neck, and a line surrounding the face, black, arms clear yel- 

 low, lower part of the neck and belly reddish chestnut in the 

 males, and of a pale yellowish brown in the young and females. 



Cebus robustus, Kuhl. MSS. Desm. Mamm. 80. 



Icon. 



Inhabits Brazil. 



76. 2 S.C. Apella (The Weeper Monkey). Fur brown, 



* The species proper to this subdivision have but little distinctive character, 

 and authors differ considerably as to their real number. Erlsson described 

 three, Linngeus four, Gmelin six, Buffon two, and finally the Baron Cuvier in- 

 clines to the opinion that there is but one. Pending this uncertainty, we shall, 

 in conformity with our general plan, notice the several species as indicated by 

 previous writers, together with their synonyms, with this general observation 

 as to the uncertainty of their distinctiveness. 

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