- H..', - 



N" ii>. Ditili, llcil ilii Uni/, l)('|). Aiili(i(Hii;i, ('.L'iilial Aiult's. Allil. .l/OO m. 



M"* i/|, iJ aiul lO. Laguna ilc la Savaiu' de Boguta, l)e|i. Cuiiilinamarca, lîaslern 



Andes. Altil. 2580-2600 m. 

 N°" 17, 18 aiul 11). Ditchcs near tlie Lagiina de la Savane de Bo^ola, r)e|i. (hmdi- 



naniarca, Easlern Andes. Altil. ySSo-afion m. 

 N" 20. Lasjuna Pcdronalo, near Tena, Dep. (lundinaniaiea, Ivislern Andes. Altil. 



ai)Oul 2000 m. 

 N» 21. Plankton-collection froni La^una Pedropalo, near Tena, Dcp. r.nndinaniarca, 



Easlern Andes. Altil. aboul 2000 ni. 

 N" 22. Diteli ahove liie slope of Tequcndama, Dep. Cundinaniarca. Easlern Andes. 



Allil. 2210 m. 

 N" 23. Laguna de Ubaijuc, Dep. Cundinaniarca, Easlern Andes. Allil. 2066 m. 

 N ' 2/1. Laguna de Paramo Cruz Vcrde above Bogota, Dep. Cundinamarca, Easlern 



Andes. Allil. 2700 m. 

 Tlie niosl important previous publications on Soulli American IVeslivvater Algie are 

 lliose of NoRDSTEDT, BoRGESEN, BouGE and MoBius on Alga' from Bi'azil, Bokge on Alga' 

 from Bolivia, Paraguay, Uruguay and Argenlina (including Palagonia), Lagerheim on the 

 Algœ of Ecuador, Racibouski on some Desmide from Brilish Guiana, and 0. Mûller on 

 Dialoms from South Palagonia. Varions olher records of South American fresliwater 

 AlgcB bave ais(j appeared in sundiy publicalions deaiing with tropical Alga>, and quile 

 a nuniber in Wittrock, Noudsteot and Lageriieim's " Alga' ExsiccaUe ". 



The collections from tlie Columbian Andes hâve yielded allogelher 3ii species, of 

 whicli iiearly hall' are Desinides, as niay be seen from the following table. 



Genei'a Species 



Myxophyceae 18 89 



PeridinieEe 2 4 



Bacillarieae 16 /ig 



Chlorophyceae 



Isokontœ 26 46 



Akontœ (ConJiiffalœJ 



Zi/rjuemacece 3 10 



Desmidiacea; 18 i48 



Stephanokontœ 2 8 



Helerokontœ . 4 7 



Total 8ç) 3ii 



Of the above, 24 species (and aiso i r varielies) are bere described for the lirst lime 

 as nevv lo science. 



As the author has menlioned in many [)revious publications tbc Desmidiacea' is par 

 excellence the family of freshwater Alga- which shows definile geographical peculiarities. 



1 



