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Siphonostome :: Siphonostome (n.) A siphonostomatous shell.

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

Pneumatocyst :: Pneumatocyst (n.) A cyst or sac of a siphonophore, containing air, and serving as a float, as in Physalia..

Calamary :: Calamary (n.) A cephalopod, belonging to the genus Loligo and related genera. There are many species. They have a sack of inklike fluid which they discharge from the siphon tube, when pursued or alarmed, in order to confuse their enemies. Their shell is a thin horny plate, within the flesh of the back, shaped very much like a quill pen. In America they are called squids. See Squid..

Siphonostomata :: Siphonostomata (n. pl.) An artificial division of gastropods including those that have siphonostomatous shells.

Prosiphon :: Prosiphon (n.) A minute tube found in the protoconch of ammonites, and not connected with the true siphon..

Siphonophoran :: Siphonophoran (a.) Belonging to the Siphonophora.

Nectostem :: Nectostem (n.) That portion of the axis which bears the nectocalyces in the Siphonophora.

Infundibulum :: Infundibulum (n.) The siphon of Cephalopoda. See Cephalopoda.

Pallet :: Pallet (n.) One of a pair of shelly plates that protect the siphon tubes of certain bivalves, as the Teredo. See Illust. of Teredo..

Siphon :: Siphon (n.) A device, consisting of a pipe or tube bent so as to form two branches or legs of unequal length, by which a liquid can be transferred to a lower level, as from one vessel to another, over an intermediate elevation, by the action of the pressure of the atmosphere in forcing the liquid up the shorter branch of the pipe immersed in it, while the continued excess of weight of the liquid in the longer branch (when once filled) causes a continuous flow. The flow takes place only when the

Androphore :: Androphore (n.) The part which in some Siphonophora bears the male gonophores.

Siphonopoda :: Siphonopoda (n. pl.) A division of Scaphopoda including those in which the foot terminates in a circular disk.

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

Diphyozooid :: Diphyozooid (n.) One of the free-swimming sexual zooids of Siphonophora.

Porpita :: Porpita (n.) 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, or pneumatocyst..

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

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

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

Caoutchouc :: Caoutchouc (n.) A tenacious, elastic, gummy substance obtained from the milky sap of several plants of tropical South America (esp. the euphorbiaceous tree Siphonia elastica or Hevea caoutchouc), Asia, and Africa. Being impermeable to liquids and gases, and not readly affected by exposure to air, acids, and alkalies, it is used, especially when vulcanized, for many purposes in the arts and in manufactures. Also called India rubber (because it was first brought from India, and was formerly used c

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