412 PALEONTOLOGY OF ILLINOIS. 



HYMENOPHYLLITES MYRIOPHYLLUM, Brgt. 



Veg. foss., p. 184, PI. 55, fig. 2 



The straight, strong main rachis and its branches, like the form and divisions 

 of the leaflets, entirely agree with the author's description and figures of this 

 species. Some of the terminal divisions of the pinnules appear on our speci- 

 men as slightly inflated at the point. It is not possible to see whether this 

 swelling is caused by fructification, or by the remains of some part of the half 

 destroyed epidermis. 



Roof shales of the coal at Morris, contributed by Mr. S. S. Strong. 



HYMENOPHYLLITES SCHLOTHEIMII, Brgt. 



Veg., foss., p. 193, PI. 51. 



This species should be placed in its natural order after Hymenophyllites tri- 

 dactylites, Brgt., but our specimen, a very fine one, is described here from the 

 remarkable likeness of its divisions when deprived of their epidermis, with the 

 former species. Except a few entire leaflets which have preserved their inte- 

 gral form, the whole specimen represents merely the veins and their divisions, 

 without any substance of the leaflets attached to them ; in that state, the spe- 

 cies could easily be confounded with the former or considered as a new one. 



From the same place as the former, and due also to the successful researches 

 of Mr. S. S. Strong. 



HYMENOPHYLLITES DELICATULUS, Brgt. 



Veg. fo9., p. 185, PI. 58, fig. 4. 



This species, also from the shales of Morris, could be admitted, by some of 

 its parts deprived of their epidermis, as identical with that of the same name 

 of Sternberg, which has been considered as a Cheilanthes by Goppert. The 

 thin membranaceous substance of the pinnules in our HymenopJiyllites, is gen. 

 erally partly or totally cft'aeed by maceration. 



