P. T. Cleve: The Diatoms of Finland. 33 



Sectio: Punctata. 



N. humerosa Breb. — V. H. XI, 20. 



Foss. B. 102, 103. 



N. latissima Greg. — A. S. VI, 7. 



Foss. B. 101, 102. 



N. Cluthensis Greg. var. maculifera CI. — N. R. D. II, 23. 



Mb. Ab. 100. 



Foss. B. 102. 



N. marina Ralfs. 



Sinf. Nyl. (Dannf.) 



N. amphibola CI. — N. punctata var. asymmetrica Lagst. II, 7- 

 — N. gastrum var? styriaca Grun. E. Ost. Ung. XXX, 50, 51, F. 

 Jos. Land, I, 35. 



Foss. Lk. 93. 



This form seems to be a good species, for which I should 

 have liked to have proposed the name N. styriaca, had not this 

 name been given to another species. 



N. pusilla Ralfs. — V. H. XI, 17. 



Al. 58. 



N. scutelloides W. Sm. — A. S. VI, 34. 



Foss. Sa. 89, Lk. 104. 



Var. minutissima CI. — D. fr. Gronland, XVI, 10. 



Ab. 45, 46, 48, Kon. 41. 



N. torneensis CI. n. sp. — Valve broadly lanceolate, 0,017 

 to 0,0 2 4 m. m. in length and 0,0 8 to 0,oi m. m. in breadth. 

 Rows of puncta 14 in 0,oi m. m., slightly radiant, shortened on 

 the middle of the valve. Puncta 14 in 0,oi m. m. 



PI. II, fig. 6. 



Sinb. Ob. 93. 



Var. aboensis CI. — Valve elliptic, 0,012 m. m. in length 

 and 0,0075 m. m. in breadth. Rows of puncta 12 in O.01 m. m. 

 shortened around the middle. Puncta 18 in O.01 m. m. 



PI. II, fig. 7. 



Ab. 48. 



N. Jentzschii Grun. — D. Ost. Ung. XXX, 64. 



Ab. 45, 47, 48, Sinb. Ob. 83. 



N. quinquenodis Grun. — Verb. 1860, I, 33; Verb. 1863, IV, 

 9. — V. H. X, 21. 



3 



