SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 93, NO. 6, PL. 4 



^y^ 



I 



Two Prehistoric skulls from Peru With Ear Exostoses 



Upper: A Very Large Posterior (or p-i) With a Small Antero- 

 Superior Growth _ 



Lower: Two Large Growths, Posterior and Anterior. With Sec- 

 ondary Small Growths Anteriorly 



