f 'iUP. SVIII. QUADRUMAJS’A. 309 
'vhite, sometimes bright yellow, or reddish. The whole 
face of the South American Braohyurus calvus is of a 
“ glowing scarlet hue ; ” but this colour does not appear 
Fig. Y5, Cercopitliecus petaurteta (from Brehm). 
