• The Korean Journal of Zoology
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• v.36 no.2
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• pp.223-230
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• 1993

Three species of oxvtrichid hypotrichs collected from the Han River on Sune 6, and August 26, 1992 have been cultured at laboratory. Thev were identified as Oxvtricha hvmenostoma Stokes, .1887, 0. hoemutoplasma Blatterer and Foissner, 1990 and Tochvsomu pellionellum (Muller, 1773). These species are reported for the first time from Korea. Morphological and biometrical studies were carried out by observing both wild and cultured cells and the infraciliature of silver stained specimens. The present species were redescribed and analvzed biometricallv.