60 



Fig. 87. Cymbella ventricosa, (5), cells 10-40u long, 5-12\i wide; 

 12-18 striae in 10u; raphe straight. X 1000. 



iuiini,.ii,riini 



valve views 



Notes: 



Notes on other species of CYMBELLA. 



23b Valve faces not parallel, both valve faces can be seen in girdle 

 view - AMPHORA 



A diagrammatic polar view of Amphora, (7). 



