558 Wisconsin Academy of Sciences , Arts , and Letters. 
Genus RADIOFILUM Schmidle 1894. 
Radiofilum conjunctivum SCHMIDLE, in Flora, 78 
(1894) p. 48, t. 7, figs. 4-5. 
Along shore; Plum Lake. 
Radiofilum flavescens G. S. WEST, in Jour, of Bot. 
37 (1899) p. 57, t. 394, figs. 10-11. 
Along shore; Soft Lake. 
Genus STICHOCOCGUS Nageli 1849. 
Stichococcus bacillaris NAGELI, Gatt. einz. Algen, 
(1849) p. 77, t. 4, fig. Gl. 
Along shore; Lake Mendota. 
Genus ULOTHRIX Kiitzing 1833. 
Ulothrix zonata (WEBER UND MOHR) KUTZING, 
in Flora, 16 (1833) p. 519. Conferva zonata Weber und Mohr, 
Naturhistorische Reise durch einen Theil Schwedens, (1804) 
p. 97, t. 1, fig. 7. 
Along shore; Lakes Mendota and Monona. 
Family ULVACEAE 
Genus PROTODERMA Kiitzing 1843. 
Protoderma viride KUTZING, Phycol. gener. (1843) 
p. 295. G. S. West, Brit. Freshw. Algae (1904) p. 205, figs. 
83A-83C. 
Along shore; Lake Monona. 
Family CHAETOPHORACEAE 
Genus CHAETOPHORA Schrank 1783. 
Chaetophora pisiformis (ROTH) C. A. AGARDH, 
Disp. algarum Sueciae, (1812) p. 43. Hazen, in Mem. 
Torr. Bot. Club, 11 (1902) p. 212, t. 38, fig. 1. Rivularia 
pisiformis Roth, Neue Beitr. Bot. 1 (1802) p. 272. 
Along shore; McKenna and Sunday Lakes. 
Chaetophora elegans (ROTH) C. A. AGARDH, Disp. 
algarum Sueciae, (1812) p. 42. Hazen, in Mem. Torr. Bot. 
