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A group of nomadic North American Indians including several tribes native of Arizona, New Mexico, etc.

A group of wingless insects, of which the flea in the type. See Flea.

A group of cirripeds, destitute of footlike organs.

A group of holothurians destitute of suckers. See Apneumona.

A group of corals in which the coral is not porous; -- opposed to Perforata.

A group of Turbellaria in which there is no anal aperture.

Insects without wings, constituting the seventh Linnæn order of insects, an artificial group, which included Crustacea, spiders, centipeds, and even worms. These animals are now placed in several distinct classes and orders.

ate of being arborescent; the resemblance to a tree in minerals, or crystallizations, or groups of crystals in that form; as, the arborescence produced by precipitating silver.

The plan or fundamental structure on which a natural group of animals or plants or their systems of organs are assumed to have been constructed; as, the vertebrate archetype.

A group of Annelida remarkable for having no external segments or distinct ventral nerve ganglions.

Hence: Any sea or broad sheet of water interspersed with many islands or with a group of islands.

The group of moldings, or other architectural member, above and on both sides of a door or other opening, especially if square in form.

The group including man alone.

A group of Arachnida. See Illust. in Appendix.

A group of the Carnivora, that includes the bears, weasels, etc.

ny of the most important of the carbon compounds and may all be derived from the benzene group, C6H6. The term is extended also to many of their derivatives. -- Aromatic vinegar. See under Vinegar.

A group of Tunicata, often shaped like a two-necked bottle. The group includes, social, and compound species. The gill is a netlike structure within the oral aperture. The integument is usually leathery in texture. See Illustration in Appendix.

A group of bivalve mollusks destitute of siphons, as the oyster; the asiphonate mollusks.

A group of Gastropoda, with limpetlike shells, including the abalone shells and keyhole limpets.

Now especially applied to compounds containing a two atom nitrogen group uniting two hydrocarbon radicals, as in azobenzene, azobenzoic, etc. These compounds furnish many artificial dyes. See Diazo-.