28 



Navioula cuspidata Kuetz. 



Lincoln, Talmage. (4634) 

 Navicula decurrens Kuetz. 



Talmage. (4635) 

 Navicula dicephala Ehr. 



Fairbury. (4636) 

 Navicula digitaio-radiata cyprinus (W. Sm. ) V. H. 



Talmage. (4637) 

 Navicula elliptica minutissima Gri'un. 



Talmage. (4688) 

 Navicula falaisensis Grun. 



Fairbury. (4639) 

 Navicula fasciata Lagerst. 



Talmage. (4640) 

 Navicula inflata Kuetz. 



Lincoln, Fairbury. (4642) 

 Navicula iridis Ehr. 



Auburn; fossil, central Nebraska. (4643) 

 Navicula iridis affinis (Ehr.) V. H. 



Talmage, Auburn ; fossil, Mullen. (4644) 

 Navicula iridis amphigomphus (Ehr.) V. H. 



Fossil, central Nebraska, Mullen. (4645) 

 Navicula iridis dubia (Ehr. ) V. H. 



Lincoln, Talmage. (4647) 

 Navicula levissima Kuetz. 



Sheridan county. (4646) 

 Navicula liburnica Grrun. 



Lincoln. (4648) 

 Navicula limosa Kuetz. 



Cook, Talmage. (4649) 

 Navicula macilenta Ehr. Inf. 183. 1838. 

 Navicula oblonga Kuetz. Bacill. 97. 1844. 



Talmage; fossil, central Nebrask£^, Mullen. (4650) 

 Navicula mesolepta Ehr. 



Lincoln, Auburn. (4651) 



