243 



2629. O. Frcelichii, Kuetz. 



In thin, green strata, Black Rock harbor (North Buffalo), and 

 elsewhere ; usually with 0. limosa. Filaments often twisted 

 together like the strands of a rope. 



2630. O. nigra, Vauch. 



Appearing in vast quantities in the ship canal at Black Rock, 

 (North Buffalo), in June ; floating and attached. 



2681. O. limosa, Agardh. 



Everywhere in thin green strata. 



910. BEGGIATOA, Trevisan. 



2632. B. nivea, Rabenh. 



Sulphur Spring, Niagara Falls. Wolle. 



911. HYPHEOTHRIX, Kuetz. 



2633. H. aeruginea, Wolle. 



912. SYNECHOCOCCUS, Naeg. 



2634. S. elongatus, Naeg. 



Aurora, Erie Co., Wolle. 



913. MERISMOPEDIA, Meyen. 



263o. M. nova, H. C. Wood. 



Buffalo City water supply. Abundant in a spring by the road 

 side at Sawyer's Creek, Niagara Co., Sept. 1, 1881. 



914. GLGEOCAPSA, Kuetz. 



2636. G. sparsa, H. C. Wood. 



Wet rocks at Niagara Falls, Oct. 28, 1882. 



2637. G. janthina, Naeg. 



Cliffs, Niagara Falls. Wolle. 



2638. G. aeruginosa, Kuetz. 



Niagara Falls. 



915. CHROOCOCCUS, Naeg. 



2639. C. multicoloratus, H. C. Wood. 



Wet earth along the margin of Scajauquady's Creek, with 

 other Algce. Our plant agrees well with Wood's description 

 and figures, except only that the colors observed were the 

 usual blue-green and yellowish. 



2640. C. rufescens, Naeg. 



Niagara Falls. Wolle. 



