Source : Webster's Revised Unabridged Dictionary (1913)

Tubularida \Tu"bu*lar`i*da\, n. pl. [NL.] (Zo["o]l.)
   An extensive division of Hydroidea; the tubularians; --
   called also {Athecata}, {Gymnoblastea}, and {Tubulari[ae]}.

Gymnoblastea \Gym"no*blas`te*a\, n. pl. [NL. fr. Gr. gymno`s
   naked + ? to sprout.] (Zo["o]l.)
   The Athecata; -- so called because the medusoid buds are not
   inclosed in a capsule.