1 82 Roosevelt Wild Life Bulletin 



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2 



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3 



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4 



Figs. 



5-7 



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8-9 



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lO-II 



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12 



Figs. 



13-14 



Plate 18. Plankton Algae of Palisades Park 



(All figures x 460 ) page 



Staurastrum minnesotense 144 



Staurastrum leptodadum var. cornutum 144 



5 aurastrum chaetoceras 1 39, 1 44 



Staurastrum Johnsonii 144 



Staurastrum Johnsonii var. triraiiatum 139, 144 



Staurastrum paradoxum 144 



Staurastrum paradoxum var. longipes 144 



Staurastrum citigulum 144 



Staurastrum pseudopelagicum var. minor. 139, 144 



