PLATE XI. 



PAGE. 

 Fig. 1 . ALKTHOPTERIS SPINTLOSA, Spec, nov 396 



Fig. 2. Enlarged pinnules of the same, showing nervation. 



Fig. 3. ALETHOPTERIS FALCATA, Spec, nov 390 



Fig. 4. Pinnule of the same, showing nervation. 



Fig. 5. ALETHOPTERIS sou DA, Spec. nov. 897 



Fig. 6. Pinnule of the same, with group of sporangrs. 



Fig. 7. Group of sporanges, much enlarged. 



