560 Wisconsin Academy of Sciences , Arts , and Letters. 
Chaetosphaeridium Pringsheimii forma conferta 
KLEBAHN, in Jahrb. Wiss. Bot. 25 (1893) p. 307, t. 14, 
fig. 11. 
Along shore; Adelaide, Helen (Winchester), Helen (Eagle 
River), Soft and Sunday Lakes. 
Family CYLINDROCAPSACEAE 
Genus GYLINDROGAPSA Reinsch 1867. 
Cylindrocapsa geminella WOLLE, Freshw. Algae of 
the U. S. (1887) p. 104, t. 91, figs. 1-17. 
Along shore; Lake Kegonsa. 
Family HERPOSTEIRACEAE 
Genus HERPOSTEIRON Nageli 1849. 
Herposteiron confervicola NAGELI, in Kiitzing, Spe¬ 
cies Algarum, (1849) p. 424. 
Along shore; Helen (Winchester), Kegonsa, Mendota, 
Okauchee, Otter, Soft and Waubesa Lakes. 
Herposteiron polychaete HANSGIRG, in Flora, 71 
(1888) p. 214, t. 12, figs. 1-5. 
Along shore; Plum Lake. 
Herposteiron Hyalothecae HANSGIRG, in Sitzbr. d. k. 
bohm. Ges. d. Wiss. Prag. Jahrgang 1891 (1891) p. 309. 
Heering, in Pascher, Die Siisswasser-Flora Deutschlands, 
Osterreichs, und der Schweiz. Heft. 6, Chlorophyceae 3 
(1914) p. 129, fig. 184. 
Plankton; North Turtle Lake. 
Family COLEOCHAETACEAE 
Genus COLEOCHAETE de Brebisson 1844. 
Coleochaete pulvinata A. BRAUN, in Kiitzing, Species 
algarum (1849) p. 425. Pringsheim, in Jahrb. Wiss. Bot. 2 
(1860) p. 33, t. 2, fig. 1. 
Along shore; Mendota, Old Taylor, Razorback and Sun¬ 
day Lakes. 
Coleochaete soluta (DE BREBISSON) PRING¬ 
SHEIM, in Jahrb. Wiss. Bot. 2 (1860) p. 6, t. 1, figs. 2-3. 
