l.(o 



ZOOPHYTOLOGY. 



DESCRIPTION OF PLATES. 



Plate XIII^ 



Fig. 

 1. — Buskia nitens, highly magnified. 

 2. — Two cells of the same ; the upper one showing part of the polypide 



with the sheath of setse. 

 3, 4. — Alci/onidium mammillatum, natural size and magnified. 

 5, 6. — Alcijonidium alhidum., natural size and magnified. 



Plate XIV. 



1, — Farella pedicellata, highly magnified. 



2. — A cell with polypide withdrawn, more highly magnified. 



3. — The same with the polypide expanded. 



