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Spirotrichea: Stichotrichida: Oxytrichidae

(Sterki, 1878) Corliss, 1960

Histriculus Family: Frontoventral cirri scattered on forward, mid- and rear areas of ventrum.
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).

Histriculus sp., cell division, cell body μm long, μm wide, x 400, Japan, 199? by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Histriculus Histriculus Histriculus

Histriculus sp., conjugation ?, by Y. Tsukii
Histriculus Histriculus

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