Part 50

Epidermata: abnormal excrescences or outgrowths from the skin.

Epididymis: the convoluted efferent ducts, massed at the posterior part of the testes.

Epigastrium: the first entire ventral sclerite of the abdomen.

Epigenesis: the doctrine of growth from an undifferentiated germ, as opposed to preformation, which implies development from already existing rudiments.

Epigenetic: the period after the union of the male and female elements, during which organs are forming.

Epiglossa: = epipharynx; q.v.

Epiglottis: = epipharynx; q.v.

Epilabrum: a sclerite at each side of the labrum: specifically applied in myriapods.

Epilobe: of mentum in Carabidae, really corresponds to a partially divided ligula: a lateral appendage of a bilobed mentum.

Epimera -eron: the posterior lateral thoracic sclerites; usually small, narrow or triangular.

Epiopticon: the second ganglionic swelling of the optic tract: see opticon.

Epipharyngeal: belonging or relating to the epipharynx.

Epipharyngeal sclerites: in bees; a pair of strap-like pieces extending backward from the two sides of the base of epipharynx: see hypopharyngeal sclerites.

Epipharynx: an organ, probably of taste, attached to the inner surface of the labium and supposed to correspond to the palate of higher animals Epiglossa or epiglottis.

Epiphysis: a lappet-like process covering an excavation on the fore tibia of many Lepidoptera.

Epipleural: the deflexed or inflexed portions of the elytra, immediately beneath the edge: the inflexed portions of the pronotum are sometimes called prothoracic epipleura: as generally used, the term is incorrectly applied to the entire bent under margin of the elytra.

Epipleural fold: the raised lower edge of the epipleura: see hypomera.

Epiplooen: see caul.

Epipygium: the dorsal arch of the last abdominal segment.

Episternites: the upper pair of corneous appendages forming the ovipositor in grasshoppers.

Episternum: the anterior and larger lateral thoracic sclerite between the sternum and notum.

Epistoma -is: the lower face between the mouth and eyes: that sclerite immediately behind or above the labrum, whether it be clypeus or an intermediate piece: in Diptera, that part of the face between the front and the labrum; the oral margin and an indefinite space immediately contiguous thereto and so = peristoma: in Odonata; = clypeus: = hypostoma.

Epithelium: the layer of cells which covers a surface or lines a cavity.

Epizoa: insects that infest the body surface of animals.

Epizooetic: living or parasitic on animals from the outside or on the surface.

Epomiae: the elevated margin of an oblique furrow in the propleurae for the reception of the front femora; Hymenoptera.

Epupillate: an ocellate spot included by a colored ring, but destitute of a pupil or central spot.

Equal: of the same length, size or shape: the superfices when they are without inequalities.