28 



BRITISH FliBSHWATEB HELIOZOA. 



Pia 184. — Raphidocystis lemani Penard. The average diameter is 

 25-35/4. (After Penard.) 



Fig. ISo.^Pinaciopliora fluviatilis Greef. 2. Nucleiis. 3. Portion of 

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

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



