DESCRIPTIONS OF THE PLATES. 421 
DESCEIPTION OF PLATE XIX. 
Lahoulbenia mexkana Tliaxter. 
Fig, 1. Mature individual. A 12. 
Fig. 2. Branch with antheridia. D 12. 
Fig. 3. Spore. D 4. 
Lahoulbenia melanotheca Thaxter 
Fig. 4. Mature individual. A 12. 
Laboidhenia longkolUs Thaxter 
Fig. 5. Mature individual. A 12. 
Fig. 6. Mature individual : terminal portion, the branches all broken from the basal cells of the 
appendages. A 12. 
Fig. 7. Branches of inner appendage with groups of antheridia. D 12. 
Fig. 8. Spore. 
Lahoulbenia Galeritm Thaxter. 
Fig. 9. Mature individual. A 12. 
Fig. 10. Lateral view of base of appendages, showing insertion of branches 
Fig. 11. Fertile branch of inner appendage with three antheridia D 12. 
Fig. 12. Spore. D 4. 
Lahoulbenia australiensis Thaxter.. 
Fig. 13. Mature individual. A 12, 
Fig. 14. Younger individual, showing thick perithecial wall. A 12. 
Fig. 15. Antheridium. D 12. 
Fig. 16. Spore. D 4. 
Lahoulbenia Fanagm Thaxter, 
Figs. 17, 18. Two mature individuals. A 12. 
Fig. 19. Two antheridia. D 12. 
Fig. 20. Spore. D 4. 
