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The second joint of the antennæ of crustaceans.

The basal joint of the legs of Crustacea.

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…

A group of decapod Crustacea, including the common crabs, characterized by a small and short abdomen, which is bent up beneath the large cephalo-thorax. [Also spelt Brachyoura.] See Crab, and Illustration in Appendix.

the brine which collects at the bottom. -- Brine shrimp, Brine worm (Zoöl.), a phyllopod crustacean of the genus Artemia, inhabiting the strong brines of salt works and natural salt lakes. See Artemia. -- Brine spring, a spring of salt water. -- Leach brine (Saltmaking), brine which drops from granulated salt in dry…

One of certain kinds of Crustacea; as, the sow bug; pill bug; bait bug; salve bug, etc.

A genus of decapod Crustacea, including some of the most common shore crabs of Europe and North America, as the rock crab, Jonah crab, etc. See Crab.

hick shell or sheild which cover the back of the tortoise, or turtle, the crab, and other crustaceous animals.

ocess of photography. Abney. -- Gas carbon, a compact variety of carbon obtained as an incrustation on the interior of gas retorts, and used for the manufacture of the carbon rods of pencils for the voltaic, arc, and for the plates of voltaic batteries, etc.

The depertment of zoölogy which treats of the Crustacea (lobsters, crabs, etc.); -- called also malacostracology and crustaceology.

The anterior portion of any one of the Arachnida and higher Crustacea, consisting of the united head and thorax.

The pincherlike claw of Crustacea and Arachnida.

A genus of marine amphipod crustacea, which bore into and sometimes destroy timber.

ite amorphous horny substance forming the harder part of the outer integument of insects, crustacea, and various other invertebrates; entomolin.

An order of Crustacea including the barnacles. When adult, they have a calcareous shell composed of several pieces. From the opening of the shell the animal throws out a group of curved legs, looking like a delicate curl, whence the name of the group. See Anatifa.

One of a pair of organs used by the male for grasping the female among many of the Crustacea.

An order of Entomastraca, including many minute Crustacea, both freshwater and marine.

The first joint of the leg of an insect or crustacean.

One of the brachyuran Crustacea. They are mostly marine, and usually have a broad, short body, covered with a strong shell or carapace. The abdomen is small and curled up beneath the body.

Any crustacean of the family Astacidæ, resembling the lobster, but smaller, and found in fresh waters. Crawfishes are esteemed very delicate food both in Europe and America. The North American species are numerous and mostly belong to the genus Cambarus. The blind crawfish of the Mamoth Cave is Cambarus pellucidus. The…