79 



1 Synedra undulata Kg. 



2 * crystallina Kg. 



3 * Bacillus Greg. 



4 Pleurosigma Balticum Sm. 



5 * decorum Sm. 



6 * elongatum Sm. 



7 Navicula Liber Sm. 



8 Pleurosigma attenuatum Sm. 



9 Scoliopleura tumidum Rabh. 



10 * convexa Grün. 



11 Stauroneis pulchella Sm. 



12 Amphiprora elegans Sm. 



13 * lepidoptera Greg. 



14 Pleurosigma rigidum Sm. 



15 Rhoicosigma arcticum Cl. 



16 Nitzschia Sigma Sm. 



17 Navicula peregrina (Ehr.) Sm. 



18 * maxima Greg. 



19 Nitzschia circumsuta (Bau.) Grün. 



20 Navicula Lyra Ehr. var. 

 *21 Navicula 



22 * nobilis Kg. 



23 Achnanthes longipes Ag. 



24 Amphora robusta Greg. 

 25 — 26 Navicula Lyra Ehr. var. 



27 Nitzschia Hungarica Grün. 



28 Tryblionella Hantzschiana Grün. 



29 Navicula Trevelyana Donk. 



30 * formosa Greg. 



31 Stauroneis pulchella Sm. 

 *32 Rhabdonema 



33 Navicula Liber Sm. 



34 Schizonema Grevülei Ag. 



35 Stauroneis pulchella Sm. 



36 Navicula Arabica Grün. 



37 * latissima Greg. 



38 s punctata Sm. 



39 = brevis Greg. 



40 = Smithii Breb. 



1 Tryblionella marginata Sm. 



2 Grammatophora oceanica Ehr. 



3 « serpentina Ehr. 

 4 — 6 Mastogloia Braunii Grün. var. 



