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gs, 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.

A genus of fresh-water phyllopod crustaceans. See Phyllopod.

An interstice or small space, as between the cracks of the surface in certain crustaceous lichens; or as between the fibers composing organs or vessels that interlace; or as between the nervures of an insect's wing.

A genus of copepod Crustacea, parasitic of fishes; a fish louse. See Branchiura.

A genus of small isopod Crustacea that can roll themselves into a ball.

A genus of phyllopod Crustacea found in salt lakes and brines; the brine shrimp. See Brine shrimp.

acing all those that have jointed legs. It includes Insects, Arachnida, Pychnogonida, and Crustacea. -- Ar*throp"o*dal, a.

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

A genus of crustaceans, containing the crawfish of fresh-water lobster of Europe, and allied species of western North America. See Crawfish.

With a crust made by browning in the oven; as, spaghetti may be served au gratin.

Broken in place; -- said of rocks having a broken or brecciated structure due to crushing, in contrast to those of brecciated materials brought from a distance.

A light or hasty luncheon. Bait bug (Zoöl), a crustacean of the genus Hippa found burrowing in sandy beaches. See Anomura.

The part of the crust of a horse's hoof which is bent inwards towards the frog at the heel on each side, and extends into the center of the sole.

Any cirriped crustacean adhering to rocks, floating timber, ships, etc., esp. (a) the sessile species (genus Balanus and allies), and (b) the stalked or goose barnacles (genus Lepas and allies). See Cirripedia, and Goose barnacle. Barnacle eater (Zoöl.), the orange filefish. -- Barnacle scale (Zoöl.), a bark louse (Ce…

The second joint of the antennæ of crustaceans.

The basal joint of the legs of Crustacea.

A series of stamps operated by one motive power, for crushing ores containing the precious metals. Knight.

pebbly shore; the strand. Beach flea (Zoöl.), the common name of many species of amphipod Crustacea, of the family Orchestidæ, living on the sea beaches, and leaping like fleas. -- Beach grass (Bot.), a coarse grass (Ammophila arundinacea), growing on the sandy shores of lakes and seas, which, by its interlaced runnin…

The second crust formed in port and some other wines after long keeping. It consists of pure, shining scales of tartar, supposed to resemble the wing of a bee.

To seize with the teeth, so that they enter or nip the thing seized; to lacerate, crush, or wound with the teeth; as, to bite an apple; to bite a crust; the dog bit a man. Such smiling rogues as these, Like rats, oft bite the holy cords atwain. Shak.