 . PLATE XXXI. 



PIG. 



1. DiPORULA VERRUCOSA, p. 220. 



2. , uat. 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 iu the test. 



