Myxophyceae 43 



Ohio. Plankton. Put-in-Bay, Lake Erie. (Snow). Iowa. Slough bot- 



tom. Eagle Grove. 1904. (Buchanan). 



99. Merismopedium novum Wood. Contr. Hist. Fresh-Water Algae. N. A. 

 14. pl. 8. f. 8. 1872. De Toni. Syll. Algar. 5: 105. 1907. 



Plate II. fig. 34. 



Colonies membranaceous, distinctly limited, with straight and entire 

 margin, composed of very numerous cells; families containing usually six- 

 teen cells; cells up to 6 mic. in diameter, oval, sometimes constricted in 

 the middle, closely approximated; cell contents light bluish green. 



Pennsylvania. Growing adherent to or entangled in, a lot of filamen- 

 tous algae. Schuylkill River, near Philadelphia. (Wood). 



Without a doubt this species is identical with M. elegans. 



TOO. Merismopedium glaucum (Ehrenberg) Naegeli. Gatt. Einz. Alg. 55. pl. 

 I D. f. I. 1849. De Toni. Syll. Algar. 5: 105. 1907. 



Nordstedt. Dq Algis Aquae Dulcis et de Characeis ex Insulis Sandvi- 

 censibus a Sv. Berggren 1875 reportatis. 3. 1878. Campbell. Plants of the 

 Detroit River. Bull. Torr. Bot. Club. 13: 93. 1886. WoUe. Fresh-Water 

 Algae United States. 326. pl. 210. f. 12-15. 1887. Bennett. Plants of 



Rhode Island. iiS- 1888. Mackenzie. A Preliminary List of Algae col- 

 lected in the neighborhood of Toronto. Proc. Can. Inst. III. 7: 270. 1890. 

 Saunders. Protophyta-Phycophyta. Flora of Nebraska. 16. pl. i. f. 5. 1894. 

 Jelliffe. A Further Contribution to the Microscopical Examination of the 

 Brooklyn Water Supply. Brook. Med. Journ. 8: 592. 1894. Tilden. List of 

 Fresh- Water Algae collected in Minnesota during 1893. Minn. Bot. Studies, 

 i: 31. 1894. Fanning. Observations on the Algae of the St. Paul city 

 water. Minn. Bot. Studies. 2: 612. pl. 45. 1901. Collins, Holden and 



Setchell. Phyc. Bor.-Am. Fasc. 20. no. 953. 1902. Riddle. Algae from 

 Sandusky Bay. Ohio Nat. 3: 317. 1902. Lemmermann. Algenfl. Sand- 

 wich.-Inseln. Bot. Jahrb. 34: 617. 1905. Riddle. Brush Lake Algae. Ohio 

 Nat. S: 268. 1905. Clark. The Holophytic Plankton of Lakes Atitlan and 

 Amatitlan, Guatemala. Proc. Biol. Soc. Wash. 21: 96. 1908. Buchanan. 

 Notes on the Algae of Iowa. Proc. Iowa Acad. Sci. 14: 9. 1908. 



Plate II. fig. 35- 



Colonies 45-150 mic. in diameter, more or less limited, with slightly sin- 

 uate-crenate margin, light blue-green or glaucous green; cells 3-6 mic. in 

 diameter, spherical or oval; cell contents pale blue-green or olive green. 



Canada. High Park, Toronto, Ontario. (Mackenzie). United States. 

 Not infrequent in ponds or sluggish waters. (Wolle). Maine. In a 



scum on a small artificial pond. Pogy Oil Factory. Round Pond. 16 July 

 1901. (Collins). Rhode Island. Providence. (Lathrop). New York. 

 Brooklyn water supply. (Jellifife). Ohio. Brush Lake, Champaign County; 

 Sandusky Bay (Riddle). Michigan. Grosse Isle, near the mouth of the 

 Detroit River. Summer of 1885. (Campbell). Minnesota. Peat-bog near 

 Lake Kilpatrick, July 1893. (Ballard). St. Paul city water. (Fanning). 

 Iowa. Floating in the quiet waters of ponds. Ames. 1884. (M. nova). 

 (Bessey). Grinnell; Fayette. (Fink). Eagle Grove. Hewitt's Pond. 1904. 



