A. CLEVE-EULER, DIAT, FLORA OF FINLAND. 11 



Foss. : Kk. Knjäsha, Koudajärvenpää, frequent. 



Distr. (mar.): East and W. Arctic Sea, Mediterranean, 

 Pacific. (Foss.) Brunn; Tegel; Hungary. 



A monstruous form with two central nodules (/. dinodosa) 

 has been delineated in PI. I, f. 6. An other very curious 

 indivudual, perhaps a sporangial form, is represented in fig. 7. 



Diploneis splendida (Greg.). — 8yn.? Navicida Entomon 

 DoNK. B. D. Tab. 7, f. 5. Navicula splendida A. S. Atl. 

 Tab. 13, f. 31 — 34 (adequate figures). The form figured in 

 V. H. Syn. Tab. 9, f. 4 is not typical. 



Foss.: Kk. Knjäsha, frequent. 



Distr. {mar.): West a. East Arctic Sea, North Sea, ubiq. 



Diploneis chersonensis (Grun.). — A. S. Atl. Tab. 12, 

 f. 40, Tab. 69, f. 21. 



Foss.: Kk. Knjäsha, rare. 



Distr. {mar.): Faeroes (0strup), North Sea etc., ubiquist. 



Diploneis chersonensis v. diminuta n. var. PI. 4, f. 76. 



Valve 30 ]x in length, 12 u. in breadth, with 21 distinctly 

 punctate striae in 10 [j.. 



Foss.: Kk. Knjäsha, rare, {mar.) 



Pantocsek has figured a similar little Diploneis, named 

 borostelekiana, that however has twice as distant rows of 

 puncta. 



Diploneis domblittensis (Grun.) — CLEVESyn. Nav, D. I, 

 Tab. 2, f. 2. 



Foss.: Ka. Viborg-dep. (Cleve 1894); Sat. Panelia; Nyl. 

 Hindersmossen, Kyrkslätt. 



Distr. {fresh or slightly brack, iv.): Sweden, Gulf of 

 Bothnia, Danmark. (Foss.) Baltic dep. from the Ancylus-epoch. 



Diploneis domblittensis (Grun.) var. subconstricta A. Cl. 

 Lule Lpmk D. PI. 1, f. 10. 0strüp, Danmarks Geol. Und. 

 II R. n:o 9, Tab. 2, f. 2. 



Foss.: Nyl. Kyrkslätt. 



Distr. (fresh w.) : (Foss.) Sweden, Danmark. 



