95 



Fig. 157- Nitzschia paradoxa , (5), cells 60-100u long, 4-6n wide; 

 6-8 carinal dots in lOu; 20-25 striae in lOu; do not 

 confuse with N. dissipata. 



mm&E^^ ^^^ 



valve view 

 X 1000 



colony in 

 girdle view 



X 500 



Notes: 



Fig. 158. Nitzschia parvula , (5), cells 20-40|i long, 3-6u wide; 

 5-8 carinal dots in lOu; striae fine, 30-35 in lOu. 

 X 1000. 



fJIIlI 



valve view 



Notes : 



