PLATE XLVIII. 



FIG. 



1. SMITTIA RETICULATA, p. 346; with ooecia. 



2__^____ _______ 17 O T* 

 . y V til . 



3. , monstrosity; union of two cells. 



4. , young cell. 



5. , outline of a single adult cell. 



6. SMITTIA LANDSBOROVII, p. 341. 



7. , old and highly calcined. 



8. , with the peristome slightly developed. 



9. - , with elongate and narrow cells. 



