Diatoms from North-East Greenland. 



253 



Naviciila 



— anfflica 



Atomus circiil. . 

 bacilliformis . . . 



capitata 



cincta 



cocconeiformis . 



contenta 



dicephala 



gibbula 



— capitata . . . 



Lagerstedtii 



falaisensis 



Gastrum 



lanceolata 



— tenella .... 



lucidula 



mutica f. Cohnii. . 



— Goeppertiana 



— ventricosa . . 



nivalis 



Heufleriana 



Placentula 



radiosa 



rhyncocephala . . . 



Rotæana 



Seminulum 



viridula slesvicens. 



t: ' J . — • 



Æ M S 





Neidiiim 



93 

 «)4 

 95 

 9G 

 97 



affin, gen. mitior . 

 — longiceps . . 



bisulcatum 



decoratum 



Iridis 



Nitzscliia 



98 — Denticula 



99 — Hantzschiana . 

 100 — Nathorstii .... 



10 



15 



11 



12 



101 

 102 

 103 



104 

 105 

 106 

 107 

 108 

 109 

 110 

 111 

 112 

 113 

 114 

 115 

 116 

 117 

 118 



119 

 120 

 121 

 122 

 123 

 124 



125 



126 



127 



128 

 129 



(Nitzschia) Palca minuta. 



— — tenuir 



— thermal, intens. . . 



Pinniilaria 



— appendiculata. . . . 



— borealis 



— Brébissonii dimin. 



— linearis carta .... 



— divergentissima . . 



— interrupta staur. . 



— lata 



— • Legumen 



— leptosoma 



— mesogong^ia 



— mesolepta angusta 



— microstauron .... 



— parva Lagerstedtii 



— staur. z/i/err. parva 



— subcapitata 



Stauroneis 



— anceps 



— javanica oblonga. 



— — triincata . . 



— obtusa 



— parvula 



— Phoenic. amphil. . 



Stephanodisciis 



— Astræa spinal. . . . 



Surirella 



— ovalis minuta. . . . 



— — ovata 



Synedra 



— radians 



Tabellaria 



— flocculosa. 



Total 



44 



18 



74 



The above list shows, that the total number of freshwater forms 

 is 128, and of these there were previously known 



from W. Greenland 44 (34.1 "/o) 



— E. Greenland 74 (57.4 ^/o) 



— Franz-Josef Land 38 (29.5 "o) 



