828 ASTRID OLE VE, THE PLANKTON OF SOMB LAKES IN SWEDEN. 



2. ßandijaiire ^V« 1896. 



Plankton rather scarce. Zooplankton preponderant, besides 

 diatoms. No flagellates or desmids. 

 Entomostracans: 



Daphnia (Ceplialoxus) cristata G. 0. SARS. 



Diaptomus graciloides LiLLJEBORG. 



Cyclops ahyssorum, junior, G. 0. Sars. 

 Rotatorians: 



Asplachna sp. 



Synchceta sp. 



Notholca longispina Kellicott. 

 Diatoms: 



Asterionella formosa v. suhtilis Grun. + . 



Tabellaria fenestrata (Lyngb.) Lutz. + . 



T. ßocculosa (Roth.) Kütz. + . 



Melosira tenuissima Grün. — . 



3. Skalka, Framnäs ^Ve 1896. 



Plankton scarce, entomostracans ruling. Rotatorians and 

 diatoms less frequent. No desmids. 

 Entomostracans : 



Daplinia (Cephaloxus) cristata G. 0. Sars. 



Bosmina obtusirostris G. 0. Sars. 



Diaptomus graciloides LiLLJEBORG. 



Cyclops scutifer, junior, G. 0. Sars. 

 Rotatorians: 



Gastroschiza flexilis Jägerskiöld, r. 



Notholca longispina Kellicott, r. 



A7iurea aculeata Ehb., r. 

 » cochlearis GosSE — . 

 Flagellates: 



Dinohryon sertularia Ehb., r. 

 Diatoms: 



Asterionella formosa v. suhtilis Grun. + . 



Tabellaria fenestrata (Lyngb.) Kütz., r. 



