THE BRAIN, 



63 



Fig. 66. 



FiGtJHE 66. — Corypliodon hamaiu^, Mars'i. Eocene. 

 Figure GS. — Paitxosyops laliceps. Marsh. E icene. 



FiorRE 67. — Tiiioceras pwgnax, Marsh. Eocene. 

 Figure G9. — Limnohyiis robuslus, Marsh. Eocene. 



