Fig. 15fc. Nitzschia linearis , (5), cells 70-l80u long, 5-6n wide; 

 8-13 carinal dots in 10ji; striae fine, 28-30 in 10^. 

 X 1000. Common. 



',«>,. i,».,nh#„,, .„,,,, .,;;;>!,„, :uj m . vnl 



;7Wff ' 7 'i |l » 'l | l ! l ip | fjff l ; l ;i | .; l T l ' l 't''V l ' l '-'|.! l ,: 1 iJi ",' > ■■»"! 



anaa 



valve view 



" >J "" '■ .ll ,i m'mTmn iii i ■■"-•""" "- ^^^^^ 



girdle view 



Notes : 



Fig. 155. 



Nitzschia Lorenziana , (5), cells 65-l60p long, 3-5U wide; 

 6-8 carinal dots in 10n; striae distinct, 17-19 in 10»i. 

 X 1000. 



CTl-UlllUlllllllli 



■iillil^ 



valve view 



Notes 



Fig. 156. Nitzschia palea, (l2),20-65u long, 2-5H wide; 10-15 

 carinal dots in 10u; striae very fine, 35-^0 in 10|i. 

 X 1000. Widespread. 



m^**- > 



valve view 



Notes : 



