108 A CATALOG OF ILLINOIS ALGAE 



pond about 1 mile N.W., July 6, 1939, #398; Woodstock — swamp 

 about 2 miles S.E., July 7, 1939, #403. Eddy 1931B, p. 461: 

 Pulaski, Wetaug — sink-hole ponds (July, Sept.)- 



DIMORPHOCOCCUS A. Braun, 1855 



D. LUNATUS A. Br. Tiffany, loc. ciL, p. 58. f. 166 (1934). 



Britton: Cook, Sag Bridge — small shallow pond, July 13, 1939, 

 #510. Lake, Fox Lake — channel entering E. side of Grass Lake, 

 Aug. 25, 1939, #971. 



GLOEOTAENIUM Hansgirg, 1890 



G. LOITLESBERGERIANUM Hansg. Tiffany, loc. cit., pi. 15. f. 366 (1934). 

 Collins 1912, p. 95; Transeau 1912, p. 143; 1913A, p. 67; 1913B, 

 p. 80: Coles, Charleston— ponds (May-Oct.). Britton: Cook, 

 Sag Bridge— stone quarry pond, Sept. 8, 1939, #1008. McHenry, 

 Woodstock — swamp about 2 miles S.E., and small pond about 

 1 mile E., July 7, 1939, #403, 425. 



KIRCHNERIELLA Schmidle, 1893 



K. LUNARis (Kirch.) Moeb. Tiffany, loc. cit., p. 56. pi. 9. f. 185 (1934). 

 Transeau 1913B, p. 80: Clark, Casey— pond (Nov.). Coles, 

 Charleston — pond (May). Britton : Lake, Fox Lake — in Channel 

 Lake, Sept. 14, 1939, #1035; Lake Zurich— in Lake Zurich, Aug. 

 24, 1939, #914; Volo— Fish Lake, Aug. 24, 1939, #935. 



K. OBESA var. major (Bern.) G. M. Smith. Tiffany, loc. cit., p. 57. f. 



190 (1934). 



Britton : Lake, Fox Lake — channel between Grass Lake and Lake 

 Marie, Sept. 14, 1939, #1028, 1029. 



NEPHROCYTIUM NaegeH, 1849 



N. AGARDHIANUM Naeg. Tiffany, loc. cit., p. 58. f. 195 (1934). 



Transeau 1913B, p. 80: Coles, Ashmore, Charleston — ponds 



(May-Nov.). Britton : Cook, Northbrook — small pond at Somme 



Forest Preserve, May 15, 1938, #65. 

 N. LUNATUM W. West. Tiffany, loc. cit., f. 193 (1934). 



Britton: Cook, Sag Bridge— small ponds, Sept. 8, 1939, #998, 



1000. 



OOCYSTIS Naegeli, 1845 



O. BORGEi Snow. Tiffany, loc. cit., p. 59. pi. 10. f. 216 (1934). 

 Ahlstrom 1936, p. 293: Cook, Evanston — Lake Michigan. 



O. CRASSA Wittr. Tiffany, loc. cit., f. 217 (1934). 



Ahlstrom 1936, p. 293; Britton 1940, p. 71: Cook, Evanston— 

 Lake Michigan; Morton Grove^ — small pond 1 mile N.W., June 



