64 A CATALOG OF ILLINOIS ALGAE 



E. OCELLATA (Ehr.) Kuetz. Boyer, Proc. Acad. Nat. Sci. Phila. 79 



(Suppl. 2): 490 (1927). 



Briggs 1872A, p. 43: Cook, Chicago — Lake Michigan. 



E. SOREX Kuetz. Boyer, loc. ciL, p. 489 (1927). 



Briggs 1872A, p. 43; Thomas & Chase 1887, p. 328: Cook, Chi- 

 cago — Lake Michigan. 



E. TURGIDA (Ehr.) Kuetz. Boyer, loc. cit., p. 488 (1927). 



Briggs 1872A, p. 43; Thomas & Chase 1887, p. 328; Ahlstrom 

 1936, p. 291 : Cook, Chicago, Evanston — Lake Michigan. Kofoid 

 1908, p. 50: Mason, Havana — IlHnois River. 



E. TURGIDA var. westermanii (Ehr.) Grun. Boyer, loc. cit. (1927). 

 Eunotia westermanii Ehr. 



Bailey 1845, p. 34, as Eunotia westermanii: St. Clair — Mississippi 

 River. 



E. ZEBRA (Ehr.) Kuetz. Boyer, loc. cit., p. 490 (1927). 



Thomas & Chase 1887, p. 328: Cook, Chicago — Lake Michigan. 



RHOPALODIA O. Mueller, 1895 



R. GiBBA (Kuetz.) Muell. Boyer, loc. cit., p. 491 (1927). 

 Epithemia gihba Kuetz. 



Thomas & Chase 1887, p. 328, as Epithemia gihha: Cook, Chicago 

 — Lake Michigan. 



R. VENTRICOSA (Kuetz.) Muell. Boyer, loc. cit. (1927). 

 Epithemia ventricosa Kuetz. 



Transeau: Clark — Whetstone Creek (Oct.). Coles, Charleston — 

 ponds and small streams (Mar., Oct., Nov.). Thomas & Chase 

 1887, p. 328, as Epithemia ventricosa: Cook, Chicago — Lake 

 Michigan, 



Suborder: SURIRELLINEAE 

 Family: NITZSCHIACEAE 



DENTICULA Kuetzing, 1844; Grunow, 1862 



D. TENUIS Kuetz. Hustedt in Pascher, Suesswass.-fl. Mitteleur. 10: 

 381. f. 723 (1930). 



Transeau: Coles, Charleston — pond (Mar.). 



HANTZSCHIA Grunow, 1880 



H. AMPHioxYS (Ehr.) Grun. Boyer, Proc. Acad. Nat. Sci. Phila. 79 



(Suppl. 2): 528 (1927). 



Nitzschia amphioxys (Ehr.) Kuetz. 



Transeau: Coles, Charleston — small streams (Mar., Nov.); Loxa 

 —ditch (Apr.). Thomas & Chase 1887, p. 329: Cook, Chicago- 

 Lake Michigan. Kofoid 1908, p. 57, as Nitzschia amphioxys: 

 Mason, Havana — Illinois River ("winter"). 



