Plate XIV. 
Fig. 1.—Euastrum verrucosum, var. Mobii, forma, Borge, x 390. 
Figs. 2a, 2ec.—Staurastrum elegans, n. sp., Borge, x 390. 
Figs. 3a, 3c.—Staurastrum sexangulare, var. incurvum, Borge, n. vat.) X 740. 
Figs, 4a, 4c.—Btanrastrum bicorne, var. longebrachiatum, Borge, 5. 85 7 
Figs. 5a, 5b, 5¢.—Xanthidium multicorne, Borge, n. sp., x 390. 
Figs. 6a, 6b, 6e.—Xanthidium bifurcatum, Borge, n. sp., x 270. 
Fig. 6ap.—Xanthidium bifurcatum. Apical lobes in vertical view. 
Fig. 62.—Xanthidium bifurcatum. A part of the zygote. 
Figs. 7a, 7d.—Arthrodesmus apiculatus, forma, Borge, x 740. 
Figs, 8a, 8d.—Arthrodesmus convergens, forma, Borge, x 740. 
Fig. 9,—Euastrum sp., Borge, x 740. 
