THE AMERICAN MIDLAND NATURALIST. 



■Oscillatoria formosa Bory. — C. S. H. Floating in water in 



trout pool. — L. D. S. 

 Oscillatoria gracilima. Vauch. Common in Jarvis pond. — C. 



S. H.; N. M. G. 

 Oscillatoria limosa Agarth. In mats of other Oscillatoria sp. 



— D. S. J. 

 Oscillatoria ornata Kuetz? Forming bright green mats in 



"lower pond."— C. S. H., D. S. J. 

 Phormidium laminosum (Agardh.) Gom. Jarvis pond. — C. 



S. H.; M. L. J. 

 Spirulina subsala Oersted. — C. S. H. On Zoster a in inner 



harbor. — H. H. Y. 

 Spirulina thuretii Con. Laurelton Pier. — H. H. Y. 



RIVULARIACEAE. 



Isactis plana (Harvey) Thuret. Algal Felts on Marsh, — 



C. S. H. Inner Harbor.— D. S. J. ; H. H. Y. 

 Rivularia a+ra Roth. East bank of estuary. — C.S.H.; H.H.Y. 

 Rivularia Sp. Inner Harbor. — C. S. H. ;D. S. J. 



Rivularia Niticla Agardh. North and east Shore, C. S. H., 



D. S. J. 



II.— MYXOMYCETES.* 



CERATOMYXACEAE. 



Ceratiomyxa fructiculosa (Muell.) Macbr. On Moss. — C. S. 



H.; M. L. B. 

 Ceratiomyxa poriodes (Alb. and Schw.) Schroeter. On stump 



near falls second lake. — C. S. H. ; D. S. J. 



CLATHROPTYCHIACEAE. 

 Dictydiiuu caucellatum (Batsch) Macbr. Abundant on Wood. 



— C. S. H.; D. S. J. 

 Enteridium splendens Morg. On rotten wood west of 1st lake. 



— D. S. J. 



CRIBRARIACEAE. 



Cribrcvria aurantiaca Schrad. — C. S. H. On rotten wood near 

 first lake.— D. S. J. 



* Revised following the terminology given in "North American Slime 

 Molds," (new and revised edition.) T. H. MacBride, MacMillan and 

 Company, 1922. See also papers by Burnham and Latham, (1914-24) 

 and Reichling, G. A., (1905). 



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