PLATE XXXII. 



FIG. 



1-3. CHORIZOPORA BRONGNIARTII, p. 224. 

 la.- , a colony, nat. size. 



4. , detached zocecia, showing the tubular 



connexions round the edge. 



5. LEPRALIA POLITA, p. 315. 



6-9. PORINA TUBULOSA, p. 230. 



