FOSSIL PLANTS. 413 



HYMENOPHYLLITES TENUIFOLIUS, Brgt. 



Veg. foss., p. 190, PI. 48, fig. 1. 



Well characterized by its straight broad rachis, the position of the pinnules, 

 the narrow lobes, etc. The epidermis is also partly destroyed. 



Roof shales at Morris ; a small specimen. 



All the foregoing species of Hymenop~hyllites are described as Sphenopteris 

 by the author. 



HYMENOPHTLLITES SPLENDENS, Sp. nov. 



PL xix, fig. 2a and 26. 



FROND tripinnatifid ; primary pinnae at a right angle to the 

 flattened main rachis, broadly lanceolate in outline ; sec- 

 ondary pinnae alternate, narrowly ovate-lanceolate, oblique 

 decurrent on the flexuous alate rachis, alternately two or 

 three lobed on each side, the lobes divided in two or three 

 lanceolate, somewhat obtuse teeth. Veins in fascicles from 

 the base of the secondary pinnge, separating in each lobe, one 

 of the divisions ascending to the point. 



The surface of the whole plant is polished shining, of a reddish brown color. 

 This species resembles the variety of H. furcatus, Brgt , called H. membranace- 

 ous, by Gutbier, which is common enough in Pennsylvania, especially in the 

 upper part of the sandstone at Pottsville and Mauch Chunk. It differs, how- 

 ever, essentially, by the thick substance of the leaves which easily separates 

 from the stone, by much thicker veins, merely approached in fascicles but not 

 united at the base of the secondary pinnre, which are longer, narrower, more 

 equally and pinnately divided in lanceolate pointed teeth. 



This species appears intermediate between H. furcatus, Brgt., and H. stipu- 

 latus, Grutb. 



Abundant in the roof shales of the coal at Colchester and Morris. 



