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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.

rtion of any one of the Arachnida and higher Crustacea, consisting of the united head and thorax.

An internal process of the sternal plates in the thorax of insects.

See Endothorax.

Same as Hemothorax.

An effusion of blood into the cavity of the pleura.

An accumulation of serous fluid in the cavity of the chest.

The middle segment of the thorax in insects. See Illust. of Coleoptera.

The last or posterior segment of the thorax in insects. See Illust. of Coleoptera.

See Pneumothorax.

n in which air or other gas is present in the cavity of the chest; -- called also pneumatothorax.

The first or anterior segment of the thorax in insects. See Illusts. of Butterfly and Coleoptera.

Accumulation of air, or other gas, and of pus, in the pleural cavity.

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 pelvi…

Relating to the abdomen and the thorax, or chest.

The segment of the body of an insect to which the wings are attached; the thorax. Kirby.

ne of the processes of the shell which project inwards and unite with one another, in the thorax of many Crustacea.

One of the larger divisions of Crustacea, so called because the thorax and abdomen are both segmented; Tetradecapoda. It includes the Amphipoda and Isopoda.

One of the somites (arthromeres) that make up the thorax of Arthropods. Packard.

The thorax of Arthropods. Packard.