420 
DESCKIPTIONS OF THE PLATES 
DESCRIPTION OF PLATE XVIII 
Laboulhenia arcuata Thaxter, 
Pigs. 1, 2. Two mature individuals. A 12. 
Pig. 3. Part of fertile brancli with antlieridium. D 12. 
Pig. 4, Spore pair. D 4, 
Laboulhenia macrotheca Thaxter. 
Pigs. 5-7. Mature individuals. Pig. 6 the typical form. A 12. 
Fig. 8. Spore. D 4. 
Zahoulbenia KunJceli (Giard) 
Fig. 9. Mature individual. A 2. 
Pig. 10. Young individual, A 2. 
Laboulhenia j^almella Thaxter. 
Figs. 11, 12. Two mature individuals, lateral and posterior views, A 2. 
Pig. 13. Young individual with trichogyne. A 2. 
Pigs. 14, 15, Two young individuals. A 2. 
PisiTS. lG-18, Anterior lateral and rjofitprinr ^Aaxxro r^f ^\^ ,^p ^^^;n.^«:„,^ 
Pig. 19. 
D2. 
Tip of branch of inner appendage bearing branch with antheridia. D 12. 
Pig, 20. Spore. D 4. 
