Description of Cothurnia imberbis
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Peritrich ciliate, in lorica, lorica ovate, about twice as long as broad, narrowest anteriorly, its margin not everted, transparent when young, assuming a yellow tinge when old. Pedicel shorter than the lorica, sometimes curved. Body of extended organism projecting but little beyond the margin of the lorica. Nucleus linear, slightly curved. Length of lorica 88.2-105.8 microns.