资料来源 : pyDict

蛭纲

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Annelida \An*nel"i*da\, n. pl. [NL. See {Annelid}.] (Zo["o]l.)
   A division of the Articulata, having the body formed of
   numerous rings or annular segments, and without jointed legs.
   The principal subdivisions are the {Ch[ae]topoda}, including
   the {Oligoch[ae]ta} or earthworms and {Polych[ae]ta} or
   marine worms; and the {Hirudinea} or leeches. See
   {Ch[ae]topoda}.

Hirudinea \Hir`u*din"e*a\, n. pl. [NL., fr. L. hirudo,
   hirudinis, a leech.] (Zo["o]l.)
   An order of Annelida, including the leeches; -- called also
   {Hirudinei}.

资料来源 : WordNet®

Hirudinea
     n : hermaphroditic aquatic or terrestrial or parasitic annelids
         [syn: {class Hirudinea}]