Funf stuck gives ten free living algae which have been identified as the gonidia of lichens.
As is very frequently the case with marine forms, as compared with their fresh-water and terrestrial allies, the Polychaeta differ from the Oligochaeta and Hirudinea in possessing a free living B FIG.
Baranetzky therefore concluded that a certain number, if not all of the so-called algae were nothing more than free living lichen-gonidia.
The older arrangement of the Polychaeta into Errantia or free living and Tubicola or tube-dwelling forms will hardly fit the much increased knowledge of the group. W.