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A division of singing birds including the thrushes and allied kinds.

A division of birds including Turnix and allied genera, resembling quails in appearance but differing from them anatomically.

fying the essential characteristics of a species, genus, or other group. Also, a group or division of animals having a certain typical or characteristic structure of body maintained within the group. Since the time of Cuvier and Baer . . . the whole animal kingdom has been universally held to be divisible into a small…

A division of insects nearly equivalent to the true Orthoptera.

The division of mankind which embraces the races having woolly or crispy hair. Cf. Leiotrichi.

Incapable of further analysis; incapable of further division or separation; constituent; elemental; as, an ultimate constituent of matter. Ultimate analysis (Chem.), organic analysis. See under Organic. -- Ultimate belief. See under Belief. -- Ultimate ratio (Math.), the limiting value of a ratio, or that toward whic…

A division of marine chætopod annelids which are furnished with uncini, as the serpulas and sabellas.

Waving or wavy; -- applied to ordinaries, or division lines.

Not set off, as a share in a firm; not made actually separate by division; as, a partner, owning one half in a firm, is said to own an undivided half so long as the business continues and his share is not set off to him.

An extensive division of Mammalia including those having claws or nails, as distinguished from the hoofed animals (Ungulata).

A division of boring Hymenoptera, including Tremex and allied genera. See Illust. of Horntail.

One of the pieces or divisions of bivalve or multivalve shells. Air valve, Ball valve, Check valve, etc. See under Air. Ball, Check, etc. -- Double-beat valve, a kind of balance valve usually consisting of a movable, open-ended, turban-shaped shell provided with two faces of nearly equal diameters, one above another,…

The front of an army; the first line or leading column; also, the front line or foremost division of a fleet, either in sailing or in battle. Standards and gonfalons, twixt van and rear, Stream in the air. Milton.

Of or pertaining to the higher division of plants, that is, the phænogamous plants, all of which are vascular, in distinction from the cryptogams, which to a large extent are cellular only. Vascular plants (Bot.), plants composed in part of vascular tissue, as all flowering plants and the higher cryptogamous plants, or…

without true flowers, and reproduced by minute spores of various kinds, or by simple cell division. { 1. Acrogens. -- Plants usually with distinct stems and leaves, existing in two alternate conditions, one of which is nonsexual and sporophoric, the other sexual and oöphoric. Divided into Vascular Acrogens, or Pterido…

An extensive artificial division of the animal kingdom, including the parasitic worms, or helminths, together with the nemerteans, annelids, and allied groups. By some writers the branchiopods, the bryzoans, and the tunicates are also included. The name was used in a still wider sense by Linnæus and his followers.…

A short scale made to slide along the divisions of a graduated instrument, as the limb of a sextant, or the scale of a barometer, for indicating parts of divisions. It is so graduated that a certain convenient number of its divisions are just equal to a certain number, either one less or one more, of the divisions of t…

A short division of any composition. Specifically: --

Of or pertaining to verses; designating distinct divisions of a writing.

One of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or cartilaginous vertebræ, together with Amphioxus in which the backbone is represented by a simple undivided notochord. The Vertebrata always have a dorsal, or neural, cavity above the notochord or backbone,…