PLATE XL1X. 



Fit;. 



1-3. SMITTIA TRISPINOSA, p. 353; vars. 



4. - , var. a (JEFFREYSI). 



5. - , var. without raised peristome and with 



very numerous oval avicularia. 



6. - , old and highly calcined. 



7. - ; with ooecia. 



8. - } smooth, marginal cells. 



9. PHYLACTELLA EXIMIA, p. 359*. 

 10, 11. SMITTIA AFFINIS, p. 348. 



* In the text this figure is wrongly numbered 11. 



