No. 3] REMARKS ON NORTHERN LITHOTHAMNIA. 11 



figured at a later occasion. Then I also hope to be able to illu- 

 strate more fully the state of things above mentioned. 



Abbreviation. 



The exclamation point, — besides being employed in its general sense after 

 the name of an author or of a collector — , indicates, after denominations of spe- 

 cies or after an area of distribution, that I have in hand or have seen a specimen 

 •or specimens. The same mark in parenthesis indicates that I have collected 

 the alga in the area concerned. 



