. 



THE 



BRITISH 



FRESHWATER RHIZOPODA 



AND 



HELIOZOA 



BY 



JAMES CASH 



AND 



GEORGE HERBERT WAILES, F.L.S. 



ASSISTED BT 



JOHN HOPKINSON, F.L.S., F.Z.S., F.E.M.S. 



Secretary of the Ray Society 



VOLUME V 



HELIOZOA 



BY 



G. H. WAILES 



LONDON 

 PRINTED FOR THE RAY SOCIETY 



1921 



