Annuloida
in Huxley's classification, one of the eight primary groups into which he divides the animal kingdom. He places it between the annulosa and the infusoria. He includes under it (1) the trematoda, or flukes; (2) the worms; (3) the tu tæniada, or tape-worms and bladderthe worms; (3) the turbellaria; (4) the acanthocephala; (5) the nematoidea, or wheel animalcules. thread-worms; thread-worms; and (6) the rotifera, or ANODYNE