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A genus of bivalve shells of which one species (D. polymorpha) is often so abundant as to be very troublesome in the fresh waters of Europe.

A genus of magnoliaceous trees. Drimys aromatica furnishes Winter's bark.

A genus of low perennial or biennial plants, the leaves of which are beset with gland-tipped bristles. See Sundew. Gray.

A genus of shrubs growing in Australia, having beautiful, hard, dry, evergreen leaves.

The genus to which belongs the single species D. Camphora, a lofty resinous tree of Borneo and Sumatra, yielding Borneo camphor and camphor oil.

Having the form of a duck's bill. Duck's-bill limpet (Zoöl.), a limpet of the genus Parmaphorus; -- so named from its shape.

A genus (Lemna) of small plants, seen floating in great quantity on the surface of stagnant pools fresh water, and supposed to furnish food for ducks; -- called also duckmeat.

ons. -- Ear sand (Anat.), otoliths. See Otolith. -- Ear snail (Zoöl.), any snail of the genus Auricula and allied genera. -- Ear stones (Anat.), otoliths. See Otolith. -- Ear trumpet, an instrument to aid in hearing. It consists of a tube broad at the outer end, and narrowing to a slender extremity which enters the…

A flattened marine univalve shell of the genus Haliotis; -- called also sea-ear. See Abalone.

A fungus of the genus Geoglossum.

A curious fungus of the genus Geaster, in which the outer coating splits into the shape of a star, and the inner one forms a ball containing the dustlike spores.

Any worm of the genus Lumbricus and allied genera, found in damp soil. One of the largest and most abundant species in Europe and America is L. terrestris; many others are known; -- called also angleworm and dewworm.

Any insect of the genus Forticula and related genera, belonging to the order Euplexoptera.

A genus of cucurbitaceous plants consisting of the single species Ecballium agreste (or Elaterium), the squirting cucumber. Its fruit, when ripe, bursts and violently ejects its seeds, together with a mucilaginous juice, from which elaterium, a powerful cathartic medicine, is prepared.

A genus of Monotremata found in Australia, Tasmania, and New Guinea. They are toothless and covered with spines; -- called also porcupine ant-eater, and Australian ant-eater.

A genus of echinoderms, including the common edible sea urchin of Europe.

A division of Annelida which includes the genus Echiurus and allies. They are often classed among the Gephyrea, and called the armed Gephyreans.

ated fish of many genera and species. The common eels of Europe and America belong to the genus Anguilla. The electrical eel is a species of Gymnotus. The so called vinegar eel is a minute nematode worm. See Conger eel, Electric eel, and Gymnotus.

A European lizard of the genus Seps.

A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.