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One of the zooids of certain Siphonophora, having somewhat the form, and the essential structure, of the bell of a jellyfish, and acting as a swimming organ.

That portion of the axis which bears the nectocalyces in the Siphonophora.

ving a sucking mouth, as the lerneans. They are mostly parasites on fishes. Called also Siphonostomata.

The doctrine or science of sounds; especially those of the human voice; phonology.

One versed in phonetics; a phonologist.

A genus of large oceanic Siphonophora which includes the Portuguese man-of-war.

An order of Siphonophora which includes Physalia.

Any siphonophore which has an air sac for a float, as the Physalia.

An order of Siphonophora, furnished with an air sac, or float, and a series of nectocalyces. See Illust. under Nectocalyx.

A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia.

The division of Siphonophora which includes the Physalia and allied genera; -- called also Pneumatophoræ.

e.] Fresh-water polyp, the hydra. -- Polyp stem (Zoöl.), that portion of the stem of a siphonophore which bears the polypites, or feeding zooids.

One of the feeding zooids, or polyps, of a coral, hydroid, or siphonophore; a hydranth. See Illust. of Campanularian.

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,…

ions, or symbols, for letters, words, etc.; short writing; stenography. See Illust. under Phonography.

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

t for writing. See Style, n., 1. That needle-shaped part at the tip of the playing arm of phonograph which sits in the groove of a phonograph record while it is turning, to detect the undulations in the phonograph groove and convert them into vibrations which are transmitted to a system (since 1920 electronic) which co…

ith 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.

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.

Any species of oceanic Siphonophora belonging to the genus Velella.