Navicula suboapitata paucistriata V. H. 



Bellevue. (4666) 

 Navicula viridis commutata Grun. 



Lincoln. (4667) 

 Navicula viridis suhlinearis Grun. 



Auburn. (4668) 

 NUzschia acicularis (Kuetz. ) W. Sm. 



Julian, Rulo, Lincoln, Salem, Pairbury, Humboldt, Talmage, 

 Arago, Weeping Water, Ashland, Cherry county. (4669) 

 NUzschia amphibia Grun. 



Talmage, St. Deroin, Pairbury, Humboldt, Auburn, Weep- 

 ing Water, Ashland; fossil, Mullen. (4670) 

 Nitzscliia communis obtusa Grun. 



Lincoln (4671) 

 Nitzschia debilis (Arnott & Byl. ) Grun. 



Talmage, Brownville, Weeping Water, Lincoln (4672) 

 Nitzschia fasciculata Grun. 



Auburn. (4673) 

 NUzschia frauenfeldii Grun. 



Lincoln, Weeping Water. (4674) 

 Nitzschia frustulum (Kuetz.) Grun. 



Salem, Holt county. (4675) ' 



Nitzschia hungarica Grun. 



Lincoln, Salem, Auburn, Talmage, Pairbury. (4676) 

 Nitzschia intermedia Hantzsch. 



Dawsons, Salem, Peru. (4677) 

 Nitzschia lanceolata W. Sm. 



Lincoln. (4678) 

 Nitzschia linearis tenuis (W. Sm.) Grun. 



Humboldt, Pairbury, Weeping Water. (4679) 

 Nitzschia obtusa nana Grun. 



Pairbury. (4680) 

 Nitzschia obtusa scapelliformis Grun. 



Talmage. (4681) 



