72 A CATALOG OF ILLINOIS ALGAE 



July 29, 1938, #181. Macon, Decatur — Lake Decatur — Lake 

 Decatur (July). Mason, Havana — Illinois River and adjacent 

 waters (all months). McHenry, Greenwood — Wonder Lake, July 

 6, 1939, #366; small creek, July 7, 1939, #431; Hartland— north 

 branch of the Kishwaukee River, July 8, 1939, #438; McHenry — 

 swamp on E. side of McCullom Lake, July 6, 1939, #374, 385, 

 387, 401; Woodstock— ponds and swamps, July 7, 1939, #403, 

 420, 425, 439, 445. Menard, Petersburg— Sangamon River 

 (July, Sept.). Moultrie, Sullivan — artificial pond (Aug.). Pulaski, 

 Wetaug— sink-hole ponds (Apr., Sept.). Sangamon, Riverton, 

 Springfield — Sangamon River (July, Sept.). 



PLATYDORINA Kofoid, 1899 



P. CAUDATA Kofoid. Tiffany, loc. ciL, p. 43. f. 92 (1934). 



Kofoid 1899, p. 419; 1900, p. 542 (Adams, Champaign, Fulton,' 

 Mason, Morgan); 1908, pp. 85, 292, 323 (Mason). Collins 1909, 

 p. 134; Galtsoff 1924, pp. 399, 402, 404, 405 (Carroll, Hancock 

 Henderson, Jo Daviess, Mercer, Rock Island, Whiteside). Eddy 

 1931A, pp. 481, 484 (Macon, Menard, Sangamon). 

 Adams, Quincy — Libby Lake (Aug.). Carroll — Mississippi 

 River (July, Sept.). Champaign, Urbana — Salt Fork (June- 

 Nov.). Fulton — Flag, Phelps and Thompsons Lakes (June- 

 Nov.). Hancock, Henderson, Jo Daviess — Mississippi River 

 (July-Sept.). Macon, Decatur — Lake Decatur (July). Mason, 

 Havana — Illinois River (June-Nov., Feb.); Quiver and Mat- 

 anzas Lakes. Menard, Petersburg^ — Sangamon River (Sept.). 

 Mercer, New Boston — Mississippi River (July, Aug.). Morgan, 

 Meredosia — Illinois River and Meredosia Lake (June-Nov.). 

 Rock Island — Mississippi River (July-Sept.). Sangamon, River- 

 ton — Sangamon River (July). Whiteside — Mississippi River 

 (July, Sept.). 



PLEODORINA Shaw, 1894 



P. CALIFORNICA Shaw. Tiffany, loc. cit., p. 42. pi. 6, 15. f. 91, 362 



(1934). 



Kofoid 1898, p. 273; 1899, p. 421; 1900, p. 543: Champaign, 

 Urbana— Salt Fork (Aug.). Britton: Cook, Northbrook— ponds 

 at Somme Forest Preserve, June 27, 1938, #111, 112; Schnells 

 Corner — ponds at Elk Grove Forest Preserve, June 23, 1938, 

 #91, 92. Lake, Fox Lake— Nippersink Creek, July 25, 1939, #601. 

 Clinton 1894, p. 383; Hempel 1898, p. 328; Kofoid 1908, pp. 86, 

 292, 323: Mason, Havana — Illinois River and adjacent lakes 

 (May-Oct.). Britton: McHenry, Richmond — South Twin Lake 



