Notes on other species of CALONEIS. 



27b Transverse striae discontinuous, interrupted by blank spaces 



or"shadow"-lines 28 



28a Longitudinal "shadow"-lines or blank spaces near valve 



margins; ends of raphe near central nodule usually turned 

 in opposite directions - NEIDIUM 



Fig. 95. Neidium dubium, (ll), cells 30-V6u long, 10-l6u wide. 

 X 1000. 



valve view 

 Notes: 



