DESCRIPTION OF SPECIES. 63 



than P. reticulata. It is found only at Clover Hill in a fine-grained dark shale, 

 associated with the upper series of small coal seams. This shale disinte- 

 grates rapidly under the action of the weather. It had been exposed on 

 the "dump" for some time when I saw it, and had mostly crumbled away. 

 From this cause I was enabled to find only a few specimens. 



SAGENOPTEEIS, Presl. 



Sagenopteris rhoifolia? 

 Plate XXX, Fig. 5. 



Only a small fragment of this plant was found, but enough to show 

 that it is clearly a Sagenopteris. Only the basal portion was seen. The 

 nerves are fine, but sharply distinct, and anastomose frequently. It resembles 

 strongly the common Sagenopteris of the Rhaetic of Europe, viz., S. rhoifolia. 

 It is, I think, identical with Emmons's Cyclopteris obscurus from the Meso- 

 zoic of North Carolina (see Emmons's "American Geology," plate 4, fig. 

 10). It has been found only at Clover Hill. 



DICEANOPTEEIS, Schenk. 



Dicrauopteris, spec? 

 Plate XXX, Fig. 6. 



Only a fragment of this plant was found, showing rather remotely 

 placed and forking nerves, going off obliquely from a principal nerve. The 

 specimen seems to be a portion of a large flabellate leaf, like the Dicra- 

 nopteris Bomeriana of Schenk, a figure of which he gives on plate xxi of the 

 " Flor. der Grenzschichten." Only the nerves which go off on one side of the 

 principal nerve appear. The plant was evidently a large one. It has been 

 found at Clover Hill alone. A single specimen only was obtained, and it 

 does not show enough to fix with certainty the species. 



GYMNOSPERM^]. 

 ZAMIEiE. 



PTEEOPHYLLUM, Brongt. 



Leaves with pedicel, linear-elongate, suddenly narrowed towards the base and 

 apex; leaflets perpendicular to the sides of the midrib and attached by their whole 



