64 Acta Societatis pro Fauna et Flora fennica, VIII, n. 2. 



Sinb. Ob. 83. 



Foss. Ob. 91. 



F. mutabilis (W. Sm.) Gran. — V. H. XLV, 12. 



Al. 59, Ab. 45, 46, Sb. 4. 



Foss. Ob. 92, Lk. 104. 



Licmophora Ag. 



L. paradoxa G. Ag. 



Sinf. Nyl. (Dannf.). 



Rhabdonema Kiitz. 



R. minutum Kiitz. — V. H. LIV, 17—21. 

 Foss. B. 102. 



R. arcuatum (Ag.) Kiitz. — V. H. LIV, 14—16. 

 Foss. B. 101, 102. 



Tetracyclic (Ralfs.) Grun. 



T. lacustris Ralfs. — W. Sm. B. D. II, XXXIX, 308. 



Ab. 36, 37, Eon. 40, Sb. 4, 5, 8, 10, 18, 70. 



Foss. Nyl. 87, Sa. 88, 89, Ta. 96, 97, Tb. 90, Ob. 92, Lk. 104. 



Var. emarginatus. 



Ab. 36, 38, 46, 48, Sb. 4. 



Diatomella Grev. 



D. Balfouriana Grev. — W. Sm. B. D. II, LXI, 383. 



Lim. 23, 26. 



This species is a most characteristic alpine and arctic form. 



Tabellaria Ehb. 



T. flocculosa Rabh. Kiitz. — V. H., LII, 10—12. 



Al. 57, Ab. 36, 38, 44, 45, 46, 47, 48, 49, Sa. 75, Kus. 72, 

 Lad. 63, 64, 65, 66, 67, Kon. 40, 41, 43, Sb. 2, 4, 5, 6, 8, 9, 10, 

 13, 16, 17, 70, Sinb. Ob. 83, Lim. 22, 23, 24, 26, 27, Lt. 28, 32, 33. 



