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Branchiopoda :: Branchiopoda (n. pl.) An order of Entomostraca; -- so named from the feet of branchiopods having been supposed to perform the function of gills. It includes the fresh-water genera Branchipus, Apus, and Limnadia, and the genus Artemia found in salt lakes. It is also called Phyllopoda. See Phyllopoda, Cladocera. It is sometimes used in a broader sense..

Extracapsular :: Extracapsular (a.) Situated outside of a capsule, esp. outside the capsular ligament of a joint..

Arthrostraca :: Arthrostraca (n. pl.) One of the larger divisions of Crustacea, so called because the thorax and abdomen are both segmented; Tetradecapoda. It includes the Amphipoda and Isopoda..

Entomostracous :: Entomostracous (a.) Belonging to the Entomostracans.

Proostraca :: Proostraca (pl. ) of Proostracu.

Water Flea :: Water flea () Any one of numerous species of small aquatic Entomostraca belonging to the genera Cyclops, Daphnia, etc; -- so called because they swim with sudden leaps, or starts..

Entomostracan :: Entomostracan (n.) One of the Entomostraca.

Rhizocephala :: Rhizocephala (n. pl.) A division of Pectostraca including saclike parasites of Crustacea. They adhere by rootlike extensions of the head. See Illusration in Appendix.

Tetracarpel :: Tetracarpel (a.) Composed of four carpels.

Ostracoidea :: Ostracoidea (n. pl.) An order of Entomostraca possessing hard bivalve shells. They are of small size, and swim freely about..

Leptostraca :: Leptostraca (n. pl.) An order of Crustacea, including Nebalia and allied forms..

Holostraca :: Holostraca (n. pl.) A division of phyllopod Crustacea, including those that are entirely covered by a bivalve shell..

Schizopoda :: Schizopoda (n. pl.) A division of shrimplike Thoracostraca in which each of the thoracic legs has a long fringed upper branch (exopodite) for swimming.

Branchiura :: Branchiura (n. pl.) A group of Entomostraca, with suctorial mouths, including species parasitic on fishes, as the carp lice (Argulus)..

Heteracanth :: Heteracanth (a.) Having the spines of the dorsal fin unsymmetrical, or thickened alternately on the right and left sides..

Periostraca :: Periostraca (pl. ) of Periostracu.

Malacostraca :: Malacostraca (n. pl.) A subclass of Crustacea, including Arthrostraca and Thoracostraca, or all those higher than the Entomostraca..

Caracal :: Caracal (n.) A lynx (Felis, or Lynx, caracal.) It is a native of Africa and Asia. Its ears are black externally, and tipped with long black hairs..

Phyllopoda :: Phyllopoda (n. pl.) An order of Entomostraca including a large number of species, most of which live in fresh water. They have flattened or leaflike legs, often very numerous, which they use in swimming. Called also Branchiopoda..

Edriophthalma :: Edriophthalma (n. pl.) A group of Crustacea in which the eyes are without stalks; the Arthrostraca.

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