550 Wisconsin Academy of Sciences, Arts, and Letters. 
Plankton; Beasley, Birch, Catfish, Cranberry, Devil’s, 
Fowler, Kawaguesaga, Kegonsa, Long, Mendota, Monona, 
Pardee, Taylor and Turtle (North and South) Lakes. 
Oocystis nodulosa W. Sc G. S. WEST, in Jour. Roy. 
Micr. Soc. (1894) p. 15, t. 2, fig. 31. 
Plankton; Lake Winnebago. 
Oocystis Novae-Semliae var. maxima W. Sc G. S. 
WEST, in Jour. Roy. Micr. Soc. (1894) p. 13, t. 2, fig. 25. 
Plankton; Found and Rock Lakes. 
Genus EREMOSPHAERA DeBary 1858. 
Eremosphaera viridis DE BARY, Unters. u. d. Fam. 
d. Coniugaten, (1858) p. 56, t. 8, figs. 26-27. 
Along shore; Clear and Lee Lakes. 
Genus NEPHROCYTIUM Nageli 1849. 
Nephrocytium Agardianum NAGELI, Gatt. einz. 
Algen, (1849) p. 79, t. 3, fig. C. 
Plankton; Lake Mendota. Along shore; Lower Nemahbin 
Lake. 
Nephrocytium Naegelii GRUNOW, in Rabenhorst, 
Flora Eur. Algarum, 3 (1868) p. 52. Cooke, Brit. Freshw. 
Algae (1882) p. 26, t. 11, figs. 2a-2c. 
Plankton; Lake Kegonsa. 
Sub-family LAGERHEIMEAE 
Genus CHODATELLA Lemmermann 1898. 
Chodatella ciliata (LAGERHEIM) LEMMERMANN, 
in Hedwigia 37 (1898) p. 310. Oocystis ciliata Lagerheim, in 
Ofvers. Kgl. Vet.-Ak. Forh. 39, No. 2 (1882) p. 76, t. 3, 
figs. 33-37. 
Plankton; Kegonsa and Mendota Lakes. 
Chodatella Droescheri LEMMERMANN, in Ber. d. D. 
bot. Ges. 18 (1900) p. 98, t. 3, fig. 12. 
Plankton; Upper Nashotah Lake. 
Chodatella citriformis SNOW, in Bull. U. S. Fish 
Comm. 22 (1902) p. 389, t. 2, figs. S 1 ^ 3 . 
Along shore; Lake Waubesa. 
