PLATE I. 



FIG. 1. Algites valdensis, gen. et sp. nov. Carbonaceous impression 



of thallus. Page 6. 

 Algites catenelloides, gen. et sp. nov. The small branched 



impressions associated with the previous species. P. 7. 



[V. 2857.] 

 FIG. 2. Algites valdcnsis, gen. et sp. nov. P. 6. 



Algites catenelloides, gen, et sp. nov. At a the elliptical form 



of the cells is shown. P. 7. [V. 2857.] 



FIG. 3. Marchantites Zeilleri, sp. nov. The branched vegetative body. 



P. 19. [V. 2330.] 



FIG. 4. Equisetites Lyelli, Mant. Stem showing leaf-sheaths and the 



base of a lateral branch. P. 25. [V. 59.] 



FIG. 5. Equisetites Bur char dti, Dunk. Tubers and root attached to a 



node. The left-hand tuber shows two teeth at the apex.' 



P. 32. [V. 2367.] 



FIG. 6. Equisetites Burchardti, Dunk. Three long and slender divisions 



of a leaf-sheath shown in the left-hand fragment. P. 32. 



[V. 2367.] 



FIG. 7. Specimen A (Plantce incertce sedis}. P. 19. [V. 2370.] 



FIG. 8. Specimen B (Plantce incertce sedis). P. 20. 

 FIG. 9. Small piece of a branch of Fig. 8 enlarged 10 times. [V. 2328.] 



