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Episternum :: Episternum (n.) One of the lateral pieces next to the sternum in the thorax of insects.

Cucullated :: Cucullated (a.) Having the prothorax elevated so as to form a sort of hood, receiving the head, as in certain insects..

Hemoothorax :: Hemoothorax (n.) An effusion of blood into the cavity of the pleura.

Abdomen :: Abdomen (n.) The belly, or that part of the body between the thorax and the pelvis. Also, the cavity of the belly, which is lined by the peritoneum, and contains the stomach, bowels, and other viscera. In man, often restricted to the part between the diaphragm and the commencement of the pelvis, the remainder being called the pelvic cavity..

Semirecondite :: Semirecondite (a.) Half hidden or half covered; said of the head of an insect when half covered by the shield of the thorax.

Echoscope :: Echoscope (n.) An instrument for intensifying sounds produced by percussion of the thorax.

Elater :: Elater (n.) Any beetle of the family Elateridae, having the habit, when laid on the back, of giving a sudden upward spring, by a quick movement of the articulation between the abdomen and thorax; -- called also click beetle, spring beetle, and snapping beetle..

Manitrunk :: Manitrunk (n.) The anterior segment of the thorax in insects. See Insect.

Pleura :: Pleura (n. fem.) The smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax; the pleural membrane.

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..

Metasternum :: Metasternum (n.) The ventral plate of the third or last segment of the thorax of insects.

Endophragma :: Endophragma (n.) A chitinous structure above the nervous cord in the thorax of certain Crustacea.

Mesosternum :: Mesosternum (n.) The ventral piece of the middle segment of the thorax in insects.

Pneumothorax :: Pneumothorax (n.) A condition in which air or other gas is present in the cavity of the chest; -- called also pneumatothorax.

Post-abdomen :: Post-abdomen (n.) That part of a crustacean behind the cephalothorax; -- more commonly called abdomen.

Pleurobranch :: Pleurobranch (n.) Any one of the gills of a crustacean that is attached to the side of the thorax.

Thorax :: Thorax (n.) The second, or middle, region of the body of a crustacean, arachnid, or other articulate animal. In the case of decapod Crustacea, some writers include under the term thorax only the three segments bearing the maxillipeds; others include also the five segments bearing the legs. See Illust. in Appendix..

Prosternum :: Prosternum (n.) The ventral plate of the prothorax of an insect.

Coarctate :: Coarctate (a.) Pressed together; closely connected; -- applied to insects having the abdomen separated from the thorax only by a constriction.

Pneumatothorax :: Pneumatothorax (n.) See Pneumothorax.

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