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An order of Bryozoa, having no epistome.

One of an order of fresh-water Bryozoa, in which the tentacles are on a lophophore, shaped like a horseshoe. See Phylactolæma.

A bryozoan of the genus Flustra.

Having the form of a funnel; pertaining to an infundibulum. Infundibulate Bryozoa (Zoöl.),a group of marine Bryozoa having a circular arrangement of the tentacles upon the disk.

A disk which surrounds the mouth and bears the tentacles of the Bryozoa. See Phylactolemata.

Any bryozoan of the genus Lunulites, having a more or less circular form.

An extensive group of Invertebrata, including the Mollusca, Brachiopoda, and Bryozoa. Called also Malacozoaria.

A division of Invertebrata which includes the classes Brachiopoda and Bryozoa; -- called also Anthoid Mollusca.

One of the special zooids, or cells, of Bryozoa, destined to receive and develop ova; an ovicell. See Bryozoa.

One of the dilatations of the body wall of Bryozoa in which the ova sometimes undegro the first stages of their development. See Illust. of Chilostoma.

A genus of Bryozoa, of the order Entoprocta, having a bell- shaped body supported on a slender pedicel. See Illust. under Entoprocta.

Surrounding the stomach; -- applied to the body cavity of Bryozoa and various other Invertebrata.

An order of fresh-water Bryozoa in which the tentacles are arranged on a horseshoe-shaped lophophore, and the mouth is covered by an epistome. Called also Lophopoda, and hippocrepians.

An order of Bryozoa of which Rhabdopleura is the type. See Rhabdopleura.

One of the ordinary zooids of the Bryozoa. [Spellt also polypid.]

A coral, or corallum; also, one of the coral-like structure made by bryozoans and hydroids.

Same as Bryozoa. See Illust. under Bryozoa, and Phylactolæmata.

An order of marine Bryozoa, having a bilobed lophophore and an axial cord. The genus Rhabdopleura is the type. Called also Podostomata. See Rhabdopleura.

Any one of several species of bryozoans of the genus Retepora. They form delicate calcareous corals, usually composed of thin fenestrated fronds.

A genus of marine Bryozoa in which the tubular cells have a centralchitinous axis and the tentacles are borne on a bilobed lophophore. It is the type of the order Pterobranchia, or Podostomata