FOSSIL PLANTS. 
413 
Hymenophyllites tenuifolius, Brgt. 
Veg. foss., p. 190, PL 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 Hymenophyllites are described as Sj)henoj>teris 
by the author. 
Hymenophyllites splendens, Sp. nov. 
PL xix, fig. 2 a and 2 h. 
Frond tripinnatifid ; primary pinnse at a right angle to the 
flattened main rachis, broadly lanceolate in outline; sec¬ 
ondary pinnas 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 pinnae, 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 II. 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 pinnae, which are longer, narrower, more 
equally and pinnately divided in lanceolate pointed teeth. 
This species appears intermediate between 11. furcatus, Brgt., and H. stipu¬ 
late, Gutb. 
Abundant in the roof shales of the coal at Colchester and Morris. 
