ICHTHYORACHIS. 



(Page. 524) 



ICHTHYOEACHIS NeWENHAMI, McCoJ. 



Figs. 16-18. Copies of McCoy's origioal illustrations. 



IcHTHYORACins Nereis, Hall. 



Fig. 19. The celluliferous face. x6. 

 Fig. 20. A fragment, natural size. 

 Fig. 21. The noncelluliferous face of a specimen. x6. 

 Lower Helderberg group. Schoharie, JV. Y. 



635 



