Genus: Solitary, but often gregarious; myoneme continuous within full length of stalk
(Illustrated Guide, 1985).
Species: Usually in groups; endoplasm filled with refractile reserve granules;
vestibule very large with an outer pharyngeal membrane;
cell body 50-157 μm long, 35-99 μm wide,
peristome 60-125 μm wide (Kudo, 1966).
Cell body 80 μm long (Kahl, 1930).
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