156 Lake Maxinkuckee, Physical and Biological Survey 



67. ( H^ETOPHORA PISIFORMIS (Roth) 



Abundant in both lakes, attached to dead, submerged sticks, 

 especially where the bottom is muddy but the water clear, form- 

 ing little bright-green globules flattened on the attached side, closely 

 resembling Rivularia with which it is associated, except in color in 

 which it forms a distinct contrast. As it is an attached form it 

 does not enter the plankton net. 



68. CH^ETOPHORA INCRASSATA (Hudson) 



Frequent on mucky or turfy bottom, especially common along 

 shore in the neighborhood of the Inlet region. A long, irregu- 

 larly, or dichotomously branching, ribbon-like bright green form 

 resembling in shape the liverwort, Riccia fluitans. It is found the 

 year round but is probably more abundant in the spring. 



69. SCHIZOMERIS LIEBLEINII Kuetzing 



Abundant in the region of Norris Inlet, attached to the sub- 

 merged parts of bulrushes, water-lilies, pond lilies, etc. It stands 

 in strong contrast with the other filamentous alga? of the lake by 

 its complex multicellular structure. To the naked eye it bears a 

 considerable resemblance to a coarse Spirogyra. 



70. ULOTHRIX ZONATA (Webber & Mohr) 



Common in a mass of fine blue-green alga? taken from the stems 

 of the yellow pond lily Nymphsea advena, July 30, 1906. 



71. ULOTHRIX TENUISSIMA Kuetzing 



Obtained in hand-gathered material along shore August 30, 

 1900, along with Lyngbya, Spirogyra, and diatoms. 



72. COLEOCH0ETE SCUTATA Brebisson 



Found abundantly in the lake attached to fragments of drainage 

 tile that were lying in 18 inches of water a little north of the ice 

 offices. The plants were observed in August, 1906. 



73. BULBOCH^TE PYGM^EA (Pringsheim) 



Fairly common in the lake attached to weeds and other algse. 



74. CEDOGONIUM BOSCH (Le ( Merc) 



One of the most abundant of the attached algse of the lake, 

 growing abundantly on rocks and pebbles, and attached to sub- 

 merged plants, forming a dense, lemon-green fine hair-like growth 

 over the substratum. Although very common, its small size as 

 compared with the Cladophoras and Spirogyras renders it rela- 



