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A genus of bright-colored Siphonophora found floating in the warmer parts of the ocean. The individuals are round and disk-shaped, with a large zooid in the center of the under side, surrounded by smaller nutritive and reproductive zooids, and by slender dactylozooids near the margin. The disk contains a central float,…

A siphon bottle. See under Siphon, n.

A cavity in the primary nectocalyx of certain Siphonophora. See Illust. under Nectocalyx.

Any marine gastropod shell of the genus Apporhais having an elongated siphon. See Illust. under Rostrifera.

with moisture; as, swimming eyes. Swimming bell (Zoöl.), a nectocalyx. See Illust. under Siphonophora. -- Swimming crab (Zoöl.), any one of numerous species of marine crabs, as those of the family Protunidæ, which have some of the joints of one or more pairs of legs flattened so as to serve as fins.…

al toy, consisting of a cup, within which is the figure of a man, and within the figure a siphon, the longer arm of which passes down through the bottom of the cup, and allows the escape of any liquid that may be poured in, when it reaches as high as the bend of the siphon, which is just below the level of the mouth of…

One of a peculiar kind of zooids situated on the polyp-stem of certain Siphonophora. They somewhat resemble the feeding zooids, but are destitute of mouths. See Siphonophora.

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.

Any species of oceanic Siphonophora belonging to the genus Velella.

A device for vibrating the pen of a siphon recorder to diminish frictional resistance on the paper. (4) An oscillator.