from The Century Dictionary and Cyclopedia

  • A family of Mastigophora, of the order Euglenida, which have the body either stiff or plastic and usually symmetrical, one or two disimilar flagella at the anterior end, and a distinct mouth at the base of the flagella. The nutrition is holozoic. It contains about a dozen genera, among which are Peranema, Zygoselmis, Petalomonas, and Anisonema.


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