67 



29a Valve and raphe sigmoid 30 



29b Valves and raphe not sigmoid 31 



30a Valves with transverse and longitudinal striae - GYROS IGMA 



Fig. 99. Gyros igma Kutzingii , (5), cells 60-120u long, 5-15H wide. 

 X 1000. 



valve view 



Notes : 



Fig. 100. Gyros igma scalproides , (5), cells 25-70u long, 5-10u 

 wide. X 1000. 



T!mtinmnr!W v :'"7' 



""<% 



: 



valve view 



Notes : 



30b Valves with transverse and oblique striae - FLEUROSIGMA 



