Genus: Oral polykinetids straight, never sigmoid (Illustrated Guide, 1985).
Small, ovoid or pyriform, anterior pointed; cytostome anterior 1/3 of body where an undulating membrane
on the right and three small membranelles on the left; macrostome forms with large buccal ciliation;
somatic ciliation complete; a contractile vacuole terminal; a spherical macronucleus central (Carey, 1992).
Species:
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