546 Wisconsin Academy of Sciences, Arts, and Letters. 
(1890) p. 10. Transeau, in Bot. Gaz. 55 (1913) p. 66, t. 3, 
figs. 1-24. 
Along shore; Kegonsa and Soft Lakes. 
Family CHARACIACEAE 
Genus GHARACIUM A. Braun 1849. 
Characium longipes RABENHORST, Alg. Dec. 18 
(1852) No. 171. A. Braun, Alg. unicell. (1855) p. 43, t. 5, 
fig. D. 
Along shore; Helen and Sunday Lakes. 
Family H YDRODICT YACEAE 
Genus PEDIASTRUM Meyen 1829. 
Pediastrum tetras (EHRENBERG) RALFS, in Ann. 
and Mag. of Nat. Hist. 14 (1844) p. 469, t. 12, fig. 4. Micras- 
terias tetras Ehrenberg, Die Infusionsthierchen, (1838) p. 155, 
t. 11, fig. 1. 
Plankton; Lake Mendota. Along shore; Adelaide, Bull¬ 
head, Clear, Devil’s, Monona, Muskallonge, Star and Wau- 
besa Lakes. 
Pediastrum biradiatum var. emarginatum (A. 
BRAUN) LAGERHEIM, in Ofvers. Kgl. Vet.-Ak. Forh. 
39, No. 2 (1882) p. 54. Pediastrum rotula var. emarginatum 
A. Braun, Alg. unicell. (1855) p. 102, t. 6, figs. 4, 8, 9, 11. 
Along shore; Adelaide and Kegonsa Lakes. 
Pediastrum intergum NAGELI, Gatt. einz. Algen, 
(1849) p. 97, t. 5, fig. B4. 
Plankton; Soft Lake. 
Pediastrum Boryanum (TURPIN) MENENGHINI, 
in Linnaea 14 (1840) p. 210. Helierella Boryana Turpin, in 
Mem. de Mus. d’Hist. Nat. Paris, 16 (1828) p. 319, t. 13, 
fig. 22. 
Plankton; Beasley, Catherine, Devil’s, Found, Fowler, 
Geneva, Harris, Kawaguesaga, Kegonsa, La Belle, Marl, 
Mud (Vilas Co.), Muskallonge, Old Taylor’s, Star, Taylor, 
Turtle (North and South), Waubesa and Winnebago Lakes. 
var. undulatum WILLE, in Ofvers Kgl. Vet.-Ak. Forh. 
36 (1879) No. 5, p. 28. 
Plankton; Lake Winnebago. 
