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Metagenesis :: Metagenesis (n.) The change of form which one animal species undergoes in a series of successively produced individuals, extending from the one developed from the ovum to the final perfected individual. Hence, metagenesis involves the production of sexual individuals by nonsexual means, either directly or through intervening sexless generations. Opposed to monogenesis. See Alternate generation, under Generation..

Sumatran :: Sumach (n.) The powdered leaves, peduncles, and young branches of certain species of the sumac plant, used in tanning and dyeing..

Patella :: Patella (n.) A genus of marine gastropods, including many species of limpets. The shell has the form of a flattened cone. The common European limpet (Patella vulgata) is largely used for food..

Vampire :: Vampire (n.) Either one of two or more species of South American blood-sucking bats belonging to the genera Desmodus and Diphylla. These bats are destitute of molar teeth, but have strong, sharp cutting incisors with which they make punctured wounds from which they suck the blood of horses, cattle, and other animals, as well as man, chiefly during sleep. They have a caecal appendage to the stomach, in which the blood with which they gorge themselves is stored..

Yellowthroat :: Yellowthroat (n.) Any one of several species of American ground warblers of the genus Geothlypis, esp. the Maryland yellowthroat (G. trichas), which is a very common species..

Ichthyosaurus :: Ichthyosaurus (n.) An extinct genus of marine reptiles; -- so named from their short, biconcave vertebrae, resembling those of fishes. Several species, varying in length from ten to thirty feet, are known from the Liassic, Oolitic, and Cretaceous formations..

Elater :: Elater (n.) The active principle of elaterium, being found in the juice of the wild or squirting cucumber (Ecballium agreste, formerly Motordica Elaterium) and other related species. It is extracted as a bitter, white, crystalline substance, which is a violent purgative..

Scaleback :: Scaleback (n.) Any one of numerous species of marine annelids of the family Polynoidae, and allies, which have two rows of scales, or elytra, along the back. See Illust. under Chaetopoda..

Mineral :: Mineral (v. i.) An inorganic species or substance occurring in nature, having a definite chemical composition and usually a distinct crystalline form. Rocks, except certain glassy igneous forms, are either simple minerals or aggregates of minerals..

Divers :: Divers (a.) Different in kind or species; diverse.

Hyalonema :: Hyalonema (n.) A genus of hexactinelline sponges, having a long stem composed of very long, slender, transparent, siliceous fibres twisted together like the strands of a color. The stem of the Japanese species (H. Sieboldii), called glass-rope, has long been in use as an ornament. See Glass-rope..

Poly :: Poly (n.) A whitish woolly plant (Teucrium Polium) of the order Labiatae, found throughout the Mediterranean region. The name, with sundry prefixes, is sometimes given to other related species of the same genus..

Ionidium :: Ionidium (n.) A genus of violaceous plants, chiefly found in tropical America, some species of which are used as substitutes for ipecacuanha..

Sphex :: Sphex (n.) Any one of numerous species of sand wasps of the genus Sphex and allied genera. These wasps have the abdomen attached to the thorax by a slender pedicel. See Illust. of Sand wasp, under Sand..

Godwit :: Godwit (n.) One of several species of long-billed, wading birds of the genus Limosa, and family Tringidae. The European black-tailed godwit (Limosa limosa), the American marbled godwit (L. fedoa), the Hudsonian godwit (L. haemastica), and others, are valued as game birds. Called also godwin..

Nightshade :: Nightshade (n.) A common name of many species of the genus Solanum, given esp. to the Solanum nigrum, or black nightshade, a low, branching weed with small white flowers and black berries reputed to be poisonous..

Jay :: "Jay (n.) Any one of the numerous species of birds belonging to Garrulus, Cyanocitta, and allied genera. They are allied to the crows, but are smaller, more graceful in form, often handsomely colored, and usually have a crest..

Gorgonia :: Gorgonia (n.) A genus of Gorgoniacea, formerly very extensive, but now restricted to such species as the West Indian sea fan (Gorgonia flabellum), sea plume (G. setosa), and other allied species having a flexible, horny axis..

Anta :: Anta (n.) A species of pier produced by thickening a wall at its termination, treated architecturally as a pilaster, with capital and base..

Sivatherium :: Sivatherium (n.) A genus of very large extinct ruminants found in the Tertiary formation of India. The snout was prolonged in the form of a proboscis. The male had four horns, the posterior pair being large and branched. It was allied to the antelopes, but very much larger than any exsisting species..

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