FOSSIL COAL PLANTS. 41 



narrowed, to form a triangular column, which was again 

 expanded into a small triangular area. Exterior to the 

 shell was a drupaceous, somewhat fibrous envelope, covered 

 with a coriaceous rind. 



CARDIOCARPON — BRONG. 



120. 0. samargeforme, (n. S2').) 

 Cuyahoga Falls. 



121. 0. ? 



Cuyahoga Falls. 



122. C. ? 



Cuyahoga Falls. 



POLYSPOEIA — (N. gen.) 



123. P. mirabilis, {n. sp.) 

 Cuyahoga Falls. 



PINNULARIA — LIND. & HUTT. 



124. p. capillacea, L. & H., Foss. Flor.^ Tab. 3. 



STIGMARIA — BRONG. 



125. S. ficoides, Brong., Prod.^ p. 88. 

 Cuyahoga Falls. 



126. S. ? 



Cuyahoga Falls. 



HYDATICA — ARTIS. 



127. H. ? 



Cuyahoga Falls. 



It will be seen that the foregoing catalogue contains a 

 large number of species which I have called new, and yet I 

 am confident that the number of undescribed species is not 



F 



