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Gill :: Gill (n.) A leech.

Tectibranchiate :: Tectibranchiate (a.) Having the gills covered by the mantle; of or pertaining to the Tectibranchiata.

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.

Notobranchiata :: Notobranchiata (n. pl.) A division of nudibranchiate mollusks having gills upon the back.

Gill :: Gill (n.) The ground ivy (Nepeta Glechoma); -- called also gill over the ground, and other like names..

Aspergillum :: Aspergillum (n.) See Wateringpot shell.

Argillo-calcareous :: Argillo-calcareous (a.) Consisting of, or containing, clay and calcareous earth..

Analogue :: Analogue (n.) An organ which is equivalent in its functions to a different organ in another species or group, or even in the same group; as, the gill of a fish is the analogue of a lung in a quadruped, although the two are not of like structural relations..

Amphipneust :: Amphipneust (n.) One of a tribe of Amphibia, which have both lungs and gills at the same time, as the proteus and siren..

Lepidosiren :: Lepidosiren (n.) An eel-shaped ganoid fish of the order Dipnoi, having both gills and lungs. It inhabits the rivers of South America. The name is also applied to a related African species (Protopterus annectens). The lepidosirens grow to a length of from four to six feet. Called also doko..

Tetrabranchiata :: Tetrabranchiata (n. pl.) An order of Cephalopoda having four gills. Among living species it includes only the pearly nautilus. Numerous genera and species are found in the fossil state, such as Ammonites, Baculites, Orthoceras, etc..

Siren :: Siren (n.) Any long, slender amphibian of the genus Siren or family Sirenidae, destitute of hind legs and pelvis, and having permanent external gills as well as lungs. They inhabit the swamps, lagoons, and ditches of the Southern United States. The more common species (Siren lacertina) is dull lead-gray in color, and becames two feet long..

Gill :: Gill (n.) The radiating, gill-shaped plates forming the under surface of a mushroom..

Fringilla :: Fringilla (a.) A genus of birds, with a short, conical, pointed bill. It formerly included all the sparrows and finches, but is now restricted to certain European finches, like the chaffinch and brambling..

Cowfish :: Cowfish (n.) A California dolphin (Tursiops Gillii).

Siphonobranchiata :: Siphonobranchiata (n. pl.) A tribe of gastropods having the mantle border, on one or both sides, prolonged in the form of a spout through which water enters the gill cavity. The shell itself is not always siphonostomatous in this group..

Cryptobranchiate :: Cryptobranchiate (a.) Having concealed or rudimentary gills.

Sigillarid :: Sigillarid (n.) One of an extinct family of cryptagamous trees, including the genus Sigillaria and its allies..

Fish :: Fish (n.) An oviparous, vertebrate animal usually having fins and a covering scales or plates. It breathes by means of gills, and lives almost entirely in the water. See Pisces..

Trachelobranchiate :: Trachelobranchiate (a.) Having the gills situated upon the neck; -- said of certain mollusks.

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