^jj LIST OF FIGURES IN TEXT. 



Oyrodus hexagonm (Blainville) . (After E. Hennig.) 409 



Hypsocormus insignis Wagner 



\slhenocormus retrodorsalis Eastman 



Asihenocormus retrodorsalis Eastman. Anterior dentition 



Restoration of Leptolepis duUa. (After A. S. Woodward.) - 



