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



Ill his monograph on the Baltic diatoms JuJilin Dannfelt l ) 



o 



enumerates 67 species from the brackish water of Abo and Hel- 

 singfors, and in this work I have paid careful attention to his 

 researches. 



A few forms from Sodankyla and Pudasjarvi deposits have 

 been figured in the Atlas of A. Schmidt, and in the Synopsis of 

 Van Heurck. 



The materials for my investigation of the diatoms of Finland 

 have for the greatest part been brought together by the care of 

 Dr B. Boldt, who sent me for examination a large number of 

 samples containing both recent and fossil diatoms from the whole 



o 



country. I have also obtained a few collections from Abo, made 

 by Dr F. Elfving, and a sample of the Sodankyla deposit from 

 the Riksmuseum of Stockholm. 



I have in the following list catalogued the samples examined 

 by me. 



A. From the northern Savolaks (Savonia borealis, Sb), col- 

 eeted 18S3 by R. Boldt. 



1 — 3 from Kuopio. 



B. From Imandrian Lapland (Lapponia Imandrge, Lim) col- 

 lected 1885 by V. F. Brotherus. 



20 from Kandalaks, Krestovoja, on Amblystegium revolvens 

 in a rivulet (Reg. abiet.) 



21 from Kandalaks, in a rivulet between the village and the 

 mountain of Shelesnaja (Reg. abiet.) 



J ) On the diatoms of the Baltic Sea. Bin. till K. Sv. Vet. Akacl. 

 Handl. VI. 21, 1882. 



