Genus: Oral cavity not wide; 2 oval macronuclei; marginal cirri confluent at rear; frontventral cirri not linear; body firm, not laterally flexible (Illustrated Guide, 1985). a large AZM at least 1/2 body length; caudal & transverse cirri present; two ovoid macronuclei (Carey, 1992).
Intact cells, dog-eat-dog, macronuclei, cyst
Histriculus sp. (or Stylonychia but marginal cirri confluent at rear)
Similar Genus ->> Stylonychia; Oxytricha
