PLATE XXXI. 



FIG. 



1. DlPORULA VERRUCOSA, p. 220. 



2. - , nat. size. 



3. LEPRALIA FOLIACEA, p. 300 ; crustaceous state*. 



4; 5. PORINA BOREALIS, p. 229. 



6. - , nat. size. 

 7 ', 8. PALMICELLARIA ELEGANS, p. 378. 

 9. , nat. size. 



* There is no reference to this figure in the text. 



