U. S. NATIONAL MUSEUM 



PROCEEDINGS, VOL. XXXVI PL. 2 



.:- orbs 



car.g 



a.c f 



ceb.f pa 



■;- ' 10 soc_. ^, ;_. - 



^' ^'^^^:m 



- ^i^ 



W^ 



Skulls of Triceratops. 



For explanation of plate see page 107. 



