Smithsonian Report, 1 91 3~Hidlicka. 



Plate 2. 



la. Pithecanthropus ERECTUS, Skullcap, FROM Left Side (One-half Natural Size). 

 2a. Anthropopithecus troglodytes, Adult Female Skull, from Left Side (.Two- 

 thirds Natural Size). 



(After Dubois, Smithsonian Report for 1898.) 



