The following paper on the Algae of the Expedition, by Prof. De 

 Alton Saunders, was originally published in the Proceedings of the 

 Washington Academy of Sciences, vol. in, pp. 391486, Nov. 15, 

 1901. It is here reprinted from the same electrotype plates, so that it 

 may be quoted exactly as if it were the original. The original pagi- 

 nation has been preserved and transferred to the inner or hinge side of 

 the page, where it is enclosed in brackets, thus [392] ; while the con- 

 secutive pagination of the present volume has been added in the usual 

 place. In the plates the original numbers and running headline, 

 slightly abbreviated, have been preserved [in brackets], while the 

 volume designation and serial plate numbers have been added in the 

 usual place. The original text references to the plates are unchanged. 

 The present headpiece and title have been substituted for the running 

 heading of the Academy's Proceedings and the original title, which 

 was : Papers from the Harriman Alaska Expedition, xxv. The 

 Algce. No other alterations have been made. 



The author desires to record the following corrections : 



Page 156 [392], seventh line from bottom, for ' vagnum ' read vagum. 

 Page 160 [396] : 



Seventh line from top in table, for ' Gloiosiphonia * read Gloiofeltis. 

 Sixth line from bottom of table, for ' yendori ' r&adyendot. 

 Page 159 [395] and 203 [439], for ' Calithamnion ' read Callithamnion. 

 Page 161 [397], fifth line from top, for ' mirabilis ' read mirabile. 

 Page 163 [399], fourth line from bottom, for ' biasolletiana * read liasolettiana. 

 Page 178 [414], seventeenth line from top and seventh line from bottom, for 



' arctica ' read arcta. 



Page 181 [417], tenth line from bottom, for ' stilophorea' read stilopkorcz. 

 Page 183 [419]: 



Seventeenth line from bottom, for 'cirrosa' read cirrhosa. 



Seventh line from bottom, for ' Zoostera ' read Zostera. 

 Page 185 [421], thirteenth line from bottom, for ' lepidum' read lepidium. 

 Page 186 [422]: 



Seventh line from top, for ' Systophyllum lepidum ' read Cystophyllum 



Sixteenth line from bottom, for c Rhodamea ' read Rhodomela. 

 Page 190 [426], fifth line from top, for ' cryptostomata ' read hairs. 

 Page 202 [438] , eighteenth and eleventh lines from bottom, for ' perithecia ' read 



cystocarps. 



Page 203 [439], eleventh line from top, for { pekeanum ' read pikeanum. 

 Page 204 [440], thirteenth line from bottom, for * Gratloupiacese ' read Grate- 



loupiacece. 



Page 205 [441], fourth line from bottom, for ' patens ' read Catena. 

 Page 206 [442], eighteenth line from top, for ' yendori' readyendot. 

 Page 236 [472], for ' lacticosta' read laticosta. 



EDITOR. 



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