28 



BRITISH FilESHWATER HELIOZOA. 



FIG. 184. Raphidocystis lemani Penard. The average diameter is 

 25~35/i. (After Penard.) 



FIG. 185. Pinaciopliora jii/riatilis Greef. 2. Nucleus. 3. Portion of 

 test in optical section. 4. One of the perforated plates composing 

 the test. The average diameter is 45-50 ju. (After Penard.) 



