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Sprack :: Spoutshell (n.) Any marine gastropod shell of the genus Apporhais having an elongated siphon. See Illust. under Rostrifera.

Siphon :: Siphon (n.) One of the tubes or folds of the mantle border of a bivalve or gastropod mollusk by which water is conducted into the gill cavity. See Illust. under Mya, and Lamellibranchiata..

Siphon :: Siphon (n.) The siphuncle of a cephalopod shell.

Nectocalyx :: Nectocalyx (n.) 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..

Siphonostomatous :: Siphonostomatous (a.) Having the front edge of the aperture of the shell prolonged in the shape of a channel for the protection of the siphon; -- said of certain gastropods.

Siphon :: Siphon (n.) The anterior prolongation of the margin of any gastropod shell for the protection of the soft siphon.

Siphonophora :: Siphonophora (n. pl.) An order of pelagic Hydrozoa including species which form complex free-swimming communities composed of numerous zooids of various kinds, some of which act as floats or as swimming organs, others as feeding or nutritive zooids, and others as reproductive zooids. See Illust. under Physallia, and Porpita..

Siphonal :: Siphonal (a.) Of or pertaining to a siphon; resembling a siphon.

Asiphonata :: Asiphonata (n. pl.) Alt. of Asiphonid.

Limpet :: Limpet (n.) Any species of Siphonaria, a genus of limpet-shaped Pulmonifera, living between tides, on rocks..

Siphonostomata :: Siphonostomata (n. pl.) A tribe of parasitic copepod Crustacea including a large number of species that are parasites of fishes, as the lerneans. They have a mouth adapted to suck blood..

Siphon :: Siphon (v. t.) To convey, or draw off, by means of a siphon, as a liquid from one vessel to another at a lower level..

Hydrozoa :: Hydrozoa (n. pl.) The Acalephae; one of the classes of coelenterates, including the Hydroidea, Discophora, and Siphonophora..

Asiphonida :: Asiphonida (n. pl.) A group of bivalve mollusks destitute of siphons, as the oyster; the asiphonate mollusks..

Siphonophoran :: Siphonophoran (n.) One of the Siphonophora.

Siphon :: Siphon (n.) A sproutlike prolongation in front of the mouth of many gephyreans.

Siphonarid :: Siphonarid (n.) Any one of numerous species of limpet-shaped pulmonate gastropods of the genus Siphonaria. They cling to rocks between high and low water marks and have both lunglike organs and gills.

Siphoniata :: Siphoniata (n. pl.) Same as Siphonata.

Siphonium :: Siphonium (n.) A bony tube which, in some birds, connects the tympanium with the air chambers of the articular piece of the mandible..

Siphon :: Siphon (n.) The sucking proboscis of certain parasitic insects and crustaceans.

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