PLATP] XL. 



I'lC!. 



1. Rhynchopora bispinosa, p. 385; showing marginal 

 cells and the uncinate process. 



3. , with the oral avicularium. 



4. , with aviculiferous maraillse. 



5. , outline of zooecium^ showing the lateral 



processes. 



6. SCHIZOPORELLA CRISTATA^ p. 254. 



6«. , primary cell. 



7. ScniZOPORELLA BIAPERTA^ p. 255. 



8. , more highly magnified. 



9. , showing ooccia and aviculiferous mamillac. 



