14 ASTRID CLEVE, ON RECENT FRESHWATER DIATOMS. 



N. mutica KtJTZ. var. Göppertiana Bleisch. — V. H. X, 18. 

 Ll. 21. — Very rare. 



N. Piipula KtJTZ. — V. H. XIII, 15, 16. 



N. Pupula var. genuina GtR. A. D. p. 45. 

 Kv. 26, 32, Km. 30. — Somewliat rare. 



Var. bacillaroicles Grun. — A. D. p. 45. 



Jm. 6, S.-K. 7, Ks 15, Gl. 43, Kv. 1. — Rather rare. 



Sectio: N. Bacillares. 



X. Bacillnm Ehb. — Gr. A. D. pl. II, 50. 

 Ke. 49. — Hare. 



Sectio: N. decipientes. 



N. Semeii Ehb. — Gr. Fr. J. pl. I, 34. 



Gl. D. 44. — Rare. 



This species, freqiient in fossil deposits, but not living 

 now in Finland (Cl. Finl. p. 36) occnrs in moderate abun- 

 dance on the top of the mountain Gellivare. 



>. subtilissiiiia Cl. — Finl. pl. II, 15. 

 Tj. 42, Ke. 49. — Somewhat rare. 



Aiiomoeoneis Pfitzer. 



A. seriaiis KtJTZ. — V. H. XII, 7. 



Jm. 6, 31, Gl. 43. — Rare. 



A. brachysira Bréb. — V. H. XII, 9. 



Nav. serians var. minima Grun. V. H. XII, 9. 



Kv. 9, 16, 28, 34, Nu. 5, 18, 19, 25, 37, 41, Jm. 6, 31, 

 Ks. 15, 20, Km. 10, 30, Na. 35, Tj. 42, S.-K. 7, 22, Gl. 47.— 

 Very frequent. 



A. exllis Grun. — V. H. XII, 11, 12. 



Jm. 6, Ke. 49. — Somewhat rare. 



A. Follis Ehb. — Lewis pl. II, 5 b. 

 Jm. 6. — Rare. 



