Species of Eunotia Ehrenb. from the Cheremsky Nature Reserve. 28, 28a, 29 Eunotia dorofeyukiae Lange-Bert. & Kulikovskiy 28a arrow indicates pore outer on the raphe slit distal end 29 arrow indicates rimoportula at the venral corner of pole where raphe slit distal end finishes on the outer valve surface 30, 30a Eunotia neocompacta S. Mayama 30a arrow indicates rimoportula at the venral corner of pole, absence of a hyaline field indicates absence of terminal fissure 31 Eunotia praerupta Ehrenb. 32 Eunotia sp. 6. 33 Eunotia sp. 7. 34, 35 Eunotia tetraodon Ehrenb. Figs 28–31 SEM: 28, 28a outside valve surface; 29–31 inside valve surface; 32–35 LM. Scale bars: 5 µm (28, 29, 30); 2 µm (28a); 1 µm (30a); 10 µm (31–34).