618 Wisconsin Academy of Sciences, Arts, and Letters, 
Dinobryon bavaricum Imhof. 
Zool. Anz. 13. 484 1890; Lemmermann, Bot. Not. 1903; 78. pi. 3, figs. 3-4. 
I. George (sss), Harris (rr), Oconomowoc (rr), Speese (ss), Waupaca 
(ss). 
Dinobryon divergens (Imhof) Lemmermann. 
Ber. d. D. Bot. Ges. 18: 517. pi. 19, figs. 15-20. 1900. 
I. George (r), Green (rr), Hill (cc), Lac la Belle (ss), Meta (r), 
Oconomowoc (cc), Eock (ss), Speese (cc), Tamarack (ss). Turtle, 
North (ss), Waupaca (s). 
II. Browns (cc). Center (ss), Elizabeth (cc), Mary (c). Mill (cc). Silver 
(cc). 
Family PHAEOCAPSACEAE. 
Genus PHAEOCOCCUS Borzi 1892. 
Phaeococcus planctonicus W. & G. S. West. 
Trans. Eoy Soc. Edinb. 41: 496. pi. 6, figs. 15-16. 1905. 
The margins of the chromoplasts of the Wisconsin form are 
entire and not irregularly lobed as the Wests describe them. 
I. Devils (cc), Mendota (sss). 
II. Mary (s). Silver (s). " 
III. Shell (sss). 
Class MYXOPHYCEAE. 
Order Chroococcales. 
Family CHEOOCOCCACEAE. 
Genus CHROOCOCCUS Nageli 1849. 
Chroococcus dispersus (v. Keissler) Lemmermann. 
Arkiv. f. Botanik 2: No. 2; 102. 1904. 
C. minor var. dispersus v. Keissler, Verb. d. zool.-bot. Ges. in Wien 52: 
311. fig. 6. 1902. 
II. Browns (rr). 
Chroococcus limneticus Lemmermann. 
Bot. Cent. 76: 153. 1898: Forschungsbr. a. d. Biol. Stat. zu Plon 7: 132. 
pi. 1, figs. 22-23. 1899. 
I. Beaver (Oconomowoc) (rr), Upper Nashotah (rr). 
