176 Roosevelt Wild Life Bulletin 



Plate 15. Plankton Algae of Palisades Park 



(Figs I, 5 X 230; figs. 2-4 X 460) PAGE 



Fig I Micrasterias apiculata var. fimbriata forma spinosa 143 



Fig. 2 Micrasterias pinnatifida 143 



Fig. Micrasterias radiata 143 



Figs. 4-5 Mi rasterias muricata 143 



