38 BRITISH FRESHWATER RHIZOPODA. 
Genera: (88) Pseudodifflugia, (89) Diaphoropodon, 
(40) Microgromia, (41) Gromia, (42) Lieberkuhiia. 
Family 4. AMPHISTOMINA. 
Filose Rhizopods with membranous chitinoid tests 
which have pseudopodial openings at opposite poles. 
Genera: (43) Diplophrys, (44) Amphitrema. 
