Family: No lorica; tentacles single, in fascicles, or distributed evenly over body (Illustrated Guide, 1985).
Genus: Pyriform or pyramidal; without lorica; tentacles in 1-4 fascicles on anterior surface; stalk not rigid; simple endogenous budding; fresh water (Kudo, 1966). Tentacles emerge from distal, bullbous processes (Illustrated Guide, 1985).
Species:

intact cells 75-125 μm Japan, 1997	intact cells 75-125 μm Japan, 1997	well fed 75-125 μm Japan, 1997	feeding 75-125 μm Japan, 1997
cell division 75-125 μm Japan, 1998	morphogenesis 75-125 μm Japan, 1998	morphogenesis 75-125 μm Watarase river Ashikaga Tochigi, 2004

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