313 



"Weifse 

 Eunotia amphioxys 

 Textricula 

 zebrina 

 gibba 

 Himantidium Arcus 



idem 

 Navicu/a affinis 

 Semen 

 idem 

 Bacillum 

 Coccnnema Fusiriium 

 Gotnphonema gracile 

 Vibrio 

 Podosphenia Pupula 

 Cocconeis lineata 

 Synedra Ulna 



Fragilaria rhabdosoma 

 Gallionella decussa/a 

 procera 

 dislans 



Ehrenb. 



? 

 ? 

 ? 

 ? 

 = Eunotia zebrina? 



= Navicula Bacillum juv. 



= Navicula, Längshiilfte ? 



= Lithostylidium annulatum ? 



I 



= a b d e Synedra Ulna 

 C Desmogonium ? 



= Gallionella lenerrima 



= Morpliolith = Imatrastein 



B. Phytolitharia. 



Amphidiscus truncatus = Lithostylidium denticulatum 



Lilhodontium furcalum ! 



rostratum = a - C Lithodontium rostratum 



d Scorpius 



Platyodon := a furcatum 



b Lithostylidium irreguläre 

 curvatum = curvatum 



Scorpius ! 



Bursa =a Lithostylidium Securis? 



b Lithodontium curvatum 

 Lithostylidium Ossiculum ! 

 Trabecula? ! 



rüde = b Lithostylidium laeve? 



idem 



