DESCRIPTION OF PLATES. 



Plate I. 



u 



Figs. 1-4. Equisetides elongatas, Spec. nov. 

 " 1. Equisetides elongatus. A large fragment. 



"' 1*. Enlarged rib of same to show mid-nerve, 



" 2. Equisetides elongatus. a smaller and more slender 



specimen. 

 " 3. The same. A specimen showing what is prob- 



ably the base of the sheath. 

 " 4. The same. A specimen showing the inser- 



tion of sheath. 



5. Equisetides striatus, Spec, nov, 



6. Equisetides rugosus, Schimp, 



7. Sphenophyllum densifoliatum, Spec, nov. 

 7". A pair of leaflets of the same enlarged. 



8. Sphenophyllum filiculmis, Lesqx. 

 " 8", Leaflet of the same enlarged. 



" 9. Sphenophyllum tenuifolium, Spec. nov. 



" 9". Leaflet of the same enlarged, 



" 10-11, Sphenophyllum latifolium, Spec. nov. 



" 10. Sphenophyllum latifolium. Specimen showing 



the toothed and irregular terminal border. 

 " 10". A leaflet of the same enlarged. 



" 11. The same, with the terminations of the leaf- 



lets wanting. 



Plate II. 



Figs. 1-5. Nematophyllum angustum, Gren. nov. et spec, 

 nov. 



(121 PR) 



