Excentric: not in the centre; revolving or arranged about a point that is not central. Excision: with a deep cut: a notch or other cut-out part. Excrementaceous -titious: made up of or resembling excrement. Excrescence: an outgrowth or elevation; usually abnormal. Excretion: the act of getting rid of waste products: any material or substance produced by any secretory glands or structures and which is voided or otherwise sent out from them. Excretory: those structures concerned in ridding the body of waste products. Excurrent: attenuate, narrowly prolonged. Excurved: curved outwards. Ex larva: from or out of the larva: usually applied to specimens that have been bred from collected larvae. Exochorion: that part of the chorion derived from the ectoderm: the outer layer of the chorion. Exochorium: Heteroptera; a narrow marginal part of the hemelytra. Exoderm: the outer skin or crust. Exoloma: the apical margin of the wings. Exophytic: relating to the outside of plant tissue. Exoskeleton: the entire body wall, to the inner side of which muscles are attached. Exotic: not a natives of the place where found: an introduced species: also any species occurring in any country outside of the limits of the country whose fauna is under consideration. Exotoky: is applied to that form of reproduction where the eggs are developed outside of the body of the insect and without care by the mother see endotoky. Ex ova: from or out of the egg: applied to specimens that have been bred from the egg stage. Expanded: spread or flattened out: applied to Lepidoptera when set for the cabinet. Expanse: the distance between the apices or other widest point of the wings when fully spread. Expansio alarum: the wing stretch; see expanse. Expiratory: relating to the act of expiration, when the abdomen is contracted and the air contained in the abdominal tracheae is presumably forced out of them. Explanate: spread out and flattened; applied to a margin. Explicate: unfolded; open; without folds or plica. Exsculptate -tus: a surface with irregular, more or less longitudinal depressions, as if carved. Exscutellate: having no scutel. Exserted: protruded; projecting beyond the body or over a given point. Exsertion: a protrusion: an extension of a line or other ornamentation beyond its ordinary course. Extended: spread out: not lying one upon the other. Extense: extended: expanded. Extension plate: a structure at the base of the pulvillus whose function it is to extend it. Extension sole: the pad-like pulvillus which may be extended by the extension plate through the pressure plate. Extensor: that which extends or straightens out; applied to muscles. Extenuate: to make or to become weak, thin or slender. Exterior: the outside. Exterior margin: the outer margin; sometimes used for costal margin. External: belonging to or on the outside.