4 ERNST 0STRUP: FRESH-WATER DIATOMS FROM ICELAND 



Wherever an apparent discrepancy may be noted, between the 

 number of samples given and those of the list above (f. inst. in the 

 case of Meridion circulare, 15 samples are recorded from N.W., 

 while the list only gives 12 samples from this division) the reason 

 is, that the fresh-water forms occurring at the Icelandic coast are 

 included in the present treatise. 



The names Europe, Africa, Asia, America, Australia, Greenland, 

 Jan Mayen, Beeren Island, Spitzbergen, Franz Joseph Land are re- 

 spectively abbreviated: Eur., Af., As., Am., Aust., Grl., J. M., B. E., 

 Spb., Fz. J. 



When the list shows a name marked with an *, it indicates, 

 that the form has been found previously in Iceland. The number 

 of such forms amounts in all to 131. 



