31 



Nifzschia palea debilis (Kuetz.) Grun. 



Holt County. (4682) 

 Nitzschia palea fonticola Grun. 



Talmage, Brock, Tecumseh, Pawnee City, Humboldt, Daw- 

 son, Aspinwall, St. Deroin, Pairbury, Bellevue, Weeping 

 Water, Sheridan County, Cherry County. (4683) 

 Niizschia palea tenuirostris V. H. 



Talmage. (4684) 

 Nitzschia sigma (Kuetz. ) W. Sm. 



Sbei-idan County. Julian, Auburn, Ashland. (4685) 

 Nitzschia sigma diminuta Y. H. 



Talmage. (4686) 

 Nitzschia sigma intercedens Grun. 



Talmage. (4687) 

 Nitzschia sigma lamprocarpa (Ehr. ) Elmore. 



Navicula lamptocarpa Ehr., Kuetz., Bacill. 22. 1844. 

 Nitzschid sigma rigida (Kuetz.) Grun., Kasp. Alg. 119. 1878. 



Fairbury, Auburn, Lincoln. (4688) 

 Nitzschia sigma rigidula Grun. 



Lincoln. (4689) 

 Nitzschia sigma subcapitata Eabenh. 



Talmage. (4690; 

 Nitzschia stagnorum Rabenh. 



Talmage. (4691) 

 Nitzschia subtilis (Kuetz. ?) Grun. 



Arago, Julian, Talmage, Lincoln. (4692) 

 Nitzschia subtilis paleacea Grun. 



Humboldt, Weeping Water, Talmage. 

 Nitzschia iryblionella Hantzsch. 



Fairbury, Lincoln. (4730) 

 Nitzschia iryblionella levidensis (W. Sm. ) Grun. 



Talmage, Nemaha City, Cherry county, Auburn, Weeping 

 Water, Lincoln. (4700) 

 Nitzschia tryblionella, salinarum Grun. 



