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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.) A siphon bottle.

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

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

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

Hydrophyllium :: Hydrophyllium (n.) One of the flat, leaflike, protective zooids, covering other zooids of certain Siphonophora..

Pneumonophora :: Pneumonophora (n. pl.) The division of Siphonophora which includes the Physalia and allied genera; -- called also Pneumatophorae.

Siphon :: Siphon (n.) A tubular organ connected both with the esophagus and the intestine of certain sea urchins and annelids.

Siphon :: Siphon (n.) The tubular organ through which water is ejected from the gill cavity of a cephaloid. It serves as a locomotive organ, by guiding and confining the jet of water. Called also siphuncle. See Illust. under Loligo, and Dibranchiata..

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.

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

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

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

Siphonia :: Siphonia (pl. ) of Siphoniu.

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..

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

Taster :: Taster (n.) 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..

Siphonifer :: Siphonifer (n.) Any cephalopod having a siphonate shell.

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..

Siphonage :: Siphonage (n.) The action of a siphon.

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