mastigophore
From ZooTerms (Dictionary of Invertebrate Zoology)
mastigophore (noun; Greek mastix, whip; pherein, to bear): (Cnidaria: Anthozoa) A nematocyst with a cylindrical hempe and tube extending beyond the hempe; microbasic with hempe not more than 3 times the capsule length; macrobasic with hempe 4 or more times the capsule length.
