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A fashionable assembly; a drum. See the Note under Drum, n., 4. [Archaic] Smollett.

Tentacle sheath (Zoöl.), a sheathlike structure around the base of the tentacles of many mollusks.

Boring; perforating; -- applied to molluskas which form holes in rocks, wood, etc.

A genus of long, slender, wormlike bivalve mollusks which bore into submerged wood, such as the piles of wharves, bottoms of ships, etc.; -- called also shipworm. See Shipworm. See Illust. in App.

Invertebrate animals covered with shells, especially mollusks; shellfish.

The science of testaceous mollusks; conchology. [R.]

A genus of a large naked mollusks having a very large, broad, fringed cephalic disk, and branched dorsal gills. Some of the species become a foot long and are brilliantly colored.

The lingual ribbon, or odontophore, of a mollusk.

mouth of various invertebrates and used in feeding or procuring food; as, the teeth of a mollusk or a starfish. In spite of the teeth, in defiance of opposition; in opposition to every effort. -- In the teeth, directly; in direct opposition; in front. "Nor strive with all the tempest in my teeth." Pope. -- To cast i…

A division of marine gastropod mollusks in which the radula are converted into poison fangs. The cone shells (Conus), Pleurotoma, and Terebra, are examples. See Illust. of Cone, n., 4, Pleurotoma, and Terebra.

Having the gills situated upon the neck; -- said of certain mollusks.

Same as Trilithon. Mollett.

A young larval form of many annelids, mollusks, and bryozoans, in which a circle of cilia is developed around the anterior end.

One of the siphons of a bivalve mollusk. Capillary tube, a tube of very fine bore. See Capillary. -- Fire tube (Steam Boilers), a tube which forms a flue. -- Tube coral. (Zoöl.) Same as Tubipore. -- Tube foot (Zoöl.), one of the ambulacral suckers of an echinoderm. -- Tube plate, or Tube sheet (Steam Boilers), a fl…

Any bivalve mollusk which secretes a shelly tube around its siphon, as the watering-shell.

A group of gastropod mollusks having a tubular shell. Vermetus is an example.

s, and by some writers united with the latter. They were formerly classed with acephalous mollusks. The body is usually covered with a firm external tunic, consisting in part of cellulose, and having two openings, one for the entrance and one for the exit of water. The pharynx is usually dilated in the form of a sac, p…

s interpres). They are so called from their habit of turning up small stones in search of mollusks and other aquatic animals. Called also brant bird, sand runner, sea quail, sea lark, sparkback, and skirlcrake. Black turnstone, the California turnstone (Arenaria melanocephala). The adult in summer is mostly black, exce…

Any spiral marine gastropod belonging to Turritella and allied genera. These mollusks have an elongated, turreted shell, composed of many whorls. They have a rounded aperture, and a horny multispiral operculum.

A female guardian; a tutoress. [R.] Smollett.