FRESH WATER LG> 



PLATE Ml. 



? .T"t mv pm M. e 



Fig. 1. CYUNDROSPERMUU FLEXUO- 



SUM 

 - 1 SPM/tROZYG* SUBRIGIOA. 



F,g 3. S POLVSPERMA 

 - 4. GLOIOTftlCHA INCRUSTATA 



Fig. . CMLOROCOCCW ', ;,. '- - 

 - . HOSTOCMOPSIS LOBATUS 

 " 7. PROTOCOCCUS. 



