254 Ernst Østrup. 



from Spitzbergen 46 (35.7 "/о) 



— Beeren Eiland 16 (12.4 ^/o) 



— Jan Mayen 28 (21.7 «/o) 



not recorded 28 (21.7 Wo), 



hence previously known from the 



Arctic regions 101 (78.3 4o). 



From W. Greenl. only, and from no 



other Arctic locality 11 (8.5 ^lo). 



From the localities east of E. Greenl., 



taken as a whole 76 (58.9 Щ. 



This proves that the freshwater-Diatom-flora from East Green- 

 land which we are here considering obviously originates from the 

 east, and as regards the eastern localities, more particularly from 

 Spitzbergen. 



To this may be added that five of the forms which have been 



found, viz. 



Cymbella affinis tumida 



— Botellus 



— ventricosa semicircalaris 

 Navicula gibbula capitata and 



— Lagerstedtii, 



have hitherto — outside Greenland — been found only in Spitz- 

 bergen; and a similar origin is indicated for some of the Desmi- 

 diaceæ found by Dr. F. Borgesen (cf. F. Borgesen: Freshw. Algæ, p. 73). 



Fig. 1. Caloneis septentrionalis sp. nova Page 233 



— 2. Navicula gibbula Cl., var. capitata Lgst — 236 



— 3. Stauroneis dilata ta Ehr. forma minor — 23ö 



— 4. Cymbella septentrionalis sp. nova — 238 



— 5. Gomphonema boréale sp. nova — 239 



— 6. Anomoeoneis zellensis Grün. var. linearis var. nova — 239 



— 7. Navicula anglica Ralfs forma elongata — 240 



— 8. — gracilis Ehr. var. obesa var. nova — 240 



— 9. — sp — 241 



— 10. — pusilla W. Sni. var. capitata var. nova — 241 



— 11. Pinnularia divergens var. linearis var. nova — 243 



— 12. Cocconeis flexella Kütz var. intermedia vai-. nova — 244 



— 13. Eunotia divisa Hérib. var. arctica var. nova — 246 



— 14. Cocconeis maxima A. Cl. var. lanceolata var. nova — 245 



— 15. Eunotia parellela Ehr. var. arcuata var nova — 247 



— 16. Nitzschia fonticola Grun. var.? — 250 



— 17. Hantzschia amphio.xys (Ehr.) Grun. var. robiista var. nova — 249 



— 18. Nitzschia subcapitata sp. nova — 249 



— 19. Synedra Vaucheriæ Kütz. var. septentrionalis var. nova — 250 



