Tilden: LIST OF fresh water algae. 31 



75. Nostoc pruniforme (Roth) Ag. Disp. Al^. 45. 1810- 



1812. 

 Lake Kilpatrick. June 30, 1893. 



76. Cylindrospermum limnicola Kg. 



Irving Chase lake. July 19, 1893. 



77. LyngbyaaestuariiLiEBM. Danske. Alg. 1841. 



Gull lake. July 18, 1893. 



78. Oscillaria antliaria Juerg. Alg. Exs. n. 14. 



Gull lake. July 17, 1893. 



79. Spirulina jenneri Kg. Tab. Phyc. 1849-69. 



Home brook. July 22, 1893. 



CHROOCOCCEAE (Naeg.) Wittr.? 



80. Merismopedia gIauca(EHRB.)NAEG. Einz. Alg. 55. 1849 



Peat-bog near lake Kilpatrick. July 13, 1893. 



81. Merismopedia convoluta Breb. in Kg. Spec. Alg. 472. 



1849. 

 Peat- bog near lake Kilpatrick. July 13, 1893. 



82. Merismopedia violacea (Breb.) Kg. Spec. Alg. 472. 



1849. 

 Trout-mere, Osceola, Oct. 5, 1893. Coll. Gomvay 

 MacMillan. 



83. Oomphosphaeria aponina Kg. Tab. Phyc. 1. 1. 31. f. 3. 



1845. 

 Pool near lake Kilpatrick. July 10, 1893. 



BACILLARIEAE Nitzsch. Beitr. Infus. 1817. 



84. Naviciila spJiaerophora Kg. Alg. Exs. n. 84. 1845. 



Cullen lake. July 7, 1893. 



85. Navicula tuscula Ehrb, Ber. 21. 1840. 



Lake Sibley. June 22, 1893, 



86. Coccoueis pediciilus Ehrb. Infus. 194. 1838. 



Near Mud lake. June 28, 1893. 



87. Pleurosigma spencerii (Quek. ) W. Sm. var. kuetziiigii 



Grun. V. H. Syn. 118. 1880-81. 

 Lake Sibley. June 22, 1893. 



88. Epitheinia turgida (Ehrb. ) Kg. Bac. PI. 5. 1844. 



Gull lake. June 16, 1893. 



89. Fragilaria capucina Desmaz. Crypt. Prance ed. 1. n. 



453. 1825. 

 Pool near Stony brook. June 21, 1893. 



