Genus: Cytostome at or ahead of equator (Illustrated Guide, 1985; cytostome behind equator -->> Uropedalium, Urocyclon, Homalogastra). Anterior region not ciliated; cytostome on the ventral side close to left border in the anterior half; contractile vacuole terminal (Kudo, 1966). Ovoid, pyriform or elongate; cytostome small just above the equator; caudal cilium; somatic ciliation bipolar; a macronucleus anterior; a contractile vacuole posterior (Carey, 1992). Species:

Similar Genus ->> Cyclidium; Pleuronema

50 μm 100 μm 150 μm; x 400