PLATE III. 



Hysterites Ooedaitis Grand 'Eury 



with 



OoRDAiTES Communis Lx. 



(Pages 14 and 260.) 



Fig. 1. Portion of a rock slab bearing fragments of several leaves of Cordaites communis Lx., between 

 the nerves of which are seen the small oblong pits, with raised borders, produced by the 

 fungus, Hysterites Cordaitis Gr. 'Ey. 

 la. Photographic enlargement of portion of Cordaites leaf, showing pits produced by the fungus. 

 U.S. Nat. Mus., 5418. x2. 



316 



