P. T. Cleve: The Diatoms of Finland. 11 



Fossil deposits of diatoms are found on many places from 

 the Kemi Lappmark down to southern Finland. The Savitaipale 

 deposit, described already by Ehrenberg, and the Suomenniemi 

 deposit both belong to southern Finland (Viborgs Ian) and contain 

 diatoms, which seem not to live at present so far to the south, 

 for instance Anomceoneis serians, Eunotia robusta, E. pentagly- 

 phis, Melosira distans. It seems therefore very probable that these 

 deposits were formed during a colder period than the present one. 



Abbreviations. 



I. Authors. 



A. s. — Atlas der Diatomaceen-kunde von Ad. Schmidt. — 

 Aschersleben 1874—90. 



Btw. — Brightwell, Micr. Journ. 1856. 



CI. D. jr. Gronl — Cleve, Farskvattens-Diatomaceer fran 

 Gronland och Argentinska republiken. — Ofvers. at K. Sv. Vet. Ak- 

 Forhandl. 1881 N:o 10. 



CI. N. B. D. — Cleve, On some new and little known dia- 

 toms. — K. Sv. Vet. Akad. Handl. XVIII, n:o 5. 1881. 



CI. Vega. — Cleve, Diatoms, collected during the expedi- 

 tion of the Vega. — Vega-expeditionens vetenskapliga iakttagelser 



III. 1883. 



CI. Gr. A. D. — Cleve and Grunow, Beitrage zur Kenntniss 

 der arctischen Diatomeen. — K. Sv. Vet. Ak. Handl. XVII n:o 2. 1880. 



CI, M. D. — Cleve and Moller diatoms. Upsala 1877—79. 



Dannf. — H. Juhlin Dannfelt, on the diatoms of the baltic 



sea. Stockholm 1882. 



Donk. B. D. — Donkin, The natural history of the british 



diatomaceae. London 1870. 



Ehb. M. G. — Ehrenberg, Microgeologie. Leipzig 1854. 



Q reg( _ Gregory, Transactions of the Microscop-Soc. 



Gran. D. Ost Ung. — Grunow, Beitrage zur Kenntniss der 

 fossilen Diatomeen Osterreich Ungarns. Wien 1882. 



