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kthorn, rhubarb, etc., and regarded as a derivative of anthraquinone; -- so called from a species of rhubarb (Rheum emodei).

spots on the wings; as the American Cecropia moth (Platysamia cecropia), and the European species (Saturnia pavonia). -- Emperor paper. See under Paper. -- Purple emperor (Zoöl.), a large, strong British butterfly (Apatura iris).

A large Australian bird, of two species (Dromaius Novæ- Hollandiæ and D. irroratus), related to the cassowary and the ostrich. The emu runs swiftly, but is unable to fly. [Written also emeu and emew.]

A group of chelonians which comprises many species of fresh- water tortoises and terrapins.

One of several species of armadillos of the genera Dasypus and Euphractus, having five toes both on the fore and hind feet.

A crystal of one species inclosed within one of another, as one of rutile inclosed in quartz.

One of the subclasses of Crustacea, including a large number of species, many of them minute. The group embraces several orders; as the Phyllopoda, Ostracoda, Copepoda, and Pectostraca. See Copepoda, Phyllopoda, and Cladocera.

Archæan limestones of Canada and other regions. By some geologists it is believed to be a species of gigantic Foraminifera, but others consider it a concretion, without organic structure.

Growing upon flowers; -- said of certain species of fungi.

thing nor the other. The literary prigs epicene. Prof. Wilson. He represented an epicene species, neither churchman nor layman. J. A. Symonds.

An American genus of plants, containing but a single species (E. repens), the trailing arbutus.

ened, jointed stems, and petals united in a tube. The flowers are very showy, and several species are in cultivation.

A species of lyric poem, invented by Archilochus, in which a longer verse is followed by a shorter one; as, the Epodes of Horace. It does not include the elegiac distich.

olorless crystalline substance, C20H22O10, extracted from certain lichens, as the various species of Rocella. It is a derivative of orsellinic acid. So called because of certain red compounds derived from it. Called also erythric acid.

papaveraceous plants, found in California and upon the west coast of North America, some species of which produce beautiful yellow, orange, rose-colored, or white flowers; the California poppy.

Service of the shield, a species of knight service by which a tenant was bound to follow his lord to war, at his own charge. It was afterward exchanged for a pecuniary satisfaction. Called also scutage. Blackstone.

A species of Spanish grass (Macrochloa tenacissima), of which cordage, shoes, baskets, etc., are made. It is also used for making paper.

Distinguished among others of the same class or kind; special; concerning a species or a single object; principal; particular; as, in an especial manner or degree.

al character (Biol.), the prominent characteristics which serve to distinguish one genus, species, etc., from another. -- Essential disease, Essential fever (Med.), one that is not dependent on another. -- Essential oils (Chem.), a class of volatile oils, extracted from plants, fruits, or flowers, having each its cha…

d often bright-colored fishes inhabiting the fresh waters of North America. About seventy species are known. See Darter.