36 



APES AND MONKEYS 



about as large as a small chipmunk, and can be recognized 

 anywhere by the jaunty bonnet of white hair which stands 

 stiffly erect on the top of its head. 



Photo, by Jenness Richardson. 



COMMON MARMOSET. 



Of marmosets there are altogether about twenty-one 

 species. The best-known are the Common Marmoset,' with 

 a fan of white hairs standing stiffly erect above each ear, 

 and the Silky Marmoset,^ which is half buried in a mop of 

 long, silky, yellowish hair. 



^ Mi'das ros-a'li-a. 



^ Cal'li-ihrix jac'chus. 



