16 A CATALOG OF ILLINOIS ALGAE 



CHROOCOCCUS Naegeli, 1849 



C. LiMNETicus Lemm. Daily, loc. cit., p. 642. f. 6, 31 (1942). 



Britton: Cook, Argonne Forest Preserve — Maple Lake, Sept. 8, 

 1939, #986. Lake, Antioch — Lake Marie, Channel Lake and 

 connecting channels, Sept. 14, 1939, #1032, 1033, 1035; Lake 

 Zurich— in Lake Zurich, Aug. 24, 1939, #915; Wauconda— 

 Slocum Lake, Aug. 24, 1939, #926. 



C. RUFESCENs (Kuetz.) Naeg. Daily, loc. cit., f. 9 (1942). 

 Chroococcus minutus (Kuetz.) Naeg. 



Eddy 1927B, pp. 214, 218, as C. minutus: Cook, Chicago- 

 Lake Michigan (July). 



C. TURGiDUS (Kuetz.) Naeg. Daily, loc. cit., p. 643. f. 7, 8 (1942). 

 Transeau 1913B, p. 70: Coles, Charleston— pond (May, Oct.). 

 Britton 1940, p. 71: Cook, Glen view — swamp and intermittent 

 pond about 1^ miles W. on Central Road, May 12, 1938, Apr. 7, 

 1939, #56, 228; Morton Grove — small pond about 1 mile N.W. on 

 Waukegan Road, May 10, 1938, #43. Lake, Waukegan— Dead 

 River in Dunes Park, May 11, 1939, #255; Halfday— pond \ 

 mile E., Aug. 8, 1939, #772. McHenry, McHenry— swamp E. 

 of McCullom Lake, July 6, 1939, #376. 



COELOSPHAERIUM Naegeli, 1848 



C. coLLiNsii D. & D. Daily, loc. cit., p. 653. f. 24, 25, 34 (1942). 

 Coelosphaerium naegelianum Unger 



Eddy 1927B, pp. 214, 218; 1934, p. 400, as C. naegelianum; 

 Britton: Cook, Chicago — Lake Michigan (July); Sag Bridge — 

 quarry pond and a small pond in an extensive swamp, Sept. 8, 

 1939, #1007, 1021. Eddy 1934, p. 400, as C. naegelianum; Brit- 

 ton: Lake, Antioch — Bluff Lake, Channel Lake, Lake Marie 

 and connecting channels, Sept. 14, 1939, #1033, 1037, 1043, 1048; 

 Fox Lake — S. of Indian Point in Fox Lake, channel between 

 Fox Lake and Petite Lake, channel entering E. side of Grass 

 Lake, Aug. 25, 1939, #950, 954, 971; Lake Villa— in Long Lake; 

 Lake Zurich— in Lake Zurich, Aug. 24, 1939, #913-915; Volo— 

 Fish Lake, Aug. 24, 1939, #935. Britton: McHenry, Mc- 

 Henry— S. end of Twin Lakes (Lake Elizabeth), Aug. 2, 1939, 

 #729. Eddy 1931 B, pp. 454, 460, as C. naegelianum: Pulaski, 

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



C. KUETZINGIANUM Naeg. Daily, loc. cit., p. 654. f. 23 (1942). 

 Transeau 1913B, p. 70: Coles, Charleston — ponds (July, Sept.) 

 Britton; Eddy 1927B, pp. 208, 218: Cook, Argonne Forest Pre- 

 serve—Maple Lake, Sept. 8, 1939, #986; Chicago— Lake Michi- 

 gan (Aug.-Nov.). Britton: Lake, Fox Lake — channel entering 

 E. side of Grass Lake, Lake Marie, Channel Lake, Bluff Lake, 

 Petite Lake and connecting channels, Aug. 25, Sept. 14, 1939, 



