Elater: the spring or forked tail of Podurids. Eleutherata: all forms with free, separated maxillae; later, and more specifically, the Coleoptera. Elevate -us: a part higher than its surroundings. Elinguata: without a tongue: forms in which the maxillae are connate with the labium: see synista. Ellipsoidal: see elliptical. Elliptical: oblong-oval, the ends equally rounded, together forming an even ellipsoid. Elongata -ate: drawn out; lengthened; much longer than wide. Elutus: with scarcely distinct markings. Elytra: the anterior leathery or chitinous wings of beetles, serving as coverings to the secondaries, commonly meeting in a straight line down the middle of dorsum in repose: also applied to the tegmina in Orthoptera. Elytral ligula: a tongue-like process on the inner face of the side margin of elytra, to perfect the union with the ventral segments: e.g. in Dytiscidae. Elytriform: shaped or appearing like an elytron. Elytrin: = chitin, q.v. Elytron: singular of elytra; q.v. Elytroptera: see Coleoptera. Emandibulata: that series of insects in which there are no functional mandibles in any stage. Emandibulate: lacking functional mandibles; e.g. butterflies and moths, and applied in any stage. Emarginate: notched: with an obtuse, rounded or quadrate section cut from a margin. Embolium: Heteroptera; the narrow sclerite extending along the anterior margin of the hemelytra, from base to cuneus or membrane: the lobes on each side of the prothorax: the special enlargement at the base of the primaries which fits into a cavity in which the wing is moved. Embossed: ornamented with raised figures. Embryo: the young animal before leaving the body of the parent or before emerging from the egg. Embryonic: found in, or relating to the embryo; in an undeveloped state or condition. Emmet: an ant. Empodium: Diptera; the small process between the pulvilli: in Coleoptera; the bifid pseudotarsi between the claws: used also as = pulvillus; and see arolium, onychium, palmula, paronychium, plantula, pseudonychium and pulvillus. Enarthrosis: an articulation like a ball and socket joint. Encephalon -um: the brain, or that part of the head containing it. Encircled: ringed; margined round about. Endemic: occurring normally where found: native, not introduced. Endocardium: the inner lining membrane of the heart. Endochorium: the layer of the allantois that lines the chorium; the inner layer of the chorium. Endocranium: the inner surface of the cranium. Endoderm: the inner layer of the blastoderm in the embryo, giving origin to the mid-intestine and other visceral organs: see entoderm. Endolabium: the inner or mouth surface of the labium: the hypopharynx when that is well developed. Endomesoderm: the inner layer formed by an invagination of the middle portion of the primitive band of the embryo, and from which the endoderm and mesoderm are subsequently differentiated. Endophytic: living within plant or tree tissue, as borers or miners.