72 Cincinnati Sociely of Xatural History. 



IV. EXCOELITES. 

 5. F. encoelioides, n. sp. 



V. GiGAKTINITES. 



F. targionii, n. sp. 

 F. difformi.s, Br. 

 F. aequalis, Br. 

 F. intricatus, Br. 

 F. obtusus, Br. 

 F. .stockii, n. .sp. 

 F. recurvus, Br. 

 F. furcatus, Br. 

 F. antiquus, n. sp. 



8 



9 

 10 

 1 1 

 12 

 13 



VI. Uklesserites. 



15. F. lamourouxii, Br. 



16. F. spathulatus, n. sp. 



17. F. bertrandi, n. sp. 



18. F. gazolanus, Br. 



VII. DiCTVOTITES.'' 



19. F. flabellaris, Br. 



20. F. multifidus, n. sp. 



21. F. digitatus, n. sp. 



VIII. Am.vnsites. 



22. F. dentatus, n. sp. 



23. F. serra, n. sp. 



IX. Caulerpites. 



24. F. lycopodioides, n. sp. 



25. F. selagiiiioides, 11. sp. 

 2^.bis F. hypiioides, n. sp. 



26. F. frumentarius (Schloth.), sp. 



*Iii the Proceedings of the U. S. Nationni Museum ;VoI. xvi, 1S93, p. 115 , Dr. I). 

 P. Penhallow has applied this name tea h^-j«' je^H;/.> of fossil pl.Tnts. On page 109 

 he mentions its use by Htongniart in 1S2S. but, considering that the name " has 

 lost its function," he uses it again. Such a proceeding is not in accordance with 

 the generally adopted rule of nomenclature, that a name once used can not he ustd 

 again, if applied to a new organism. We do not believe Dr. Penhallow's action 

 will he generally concurred in. 



