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An internal process of the sternal plates in the thorax of insects.

The ninth segment in insects.

Relating to insects; entomological.

Resembling an insect. -- n.

A fossil insect.

That part of zoölogy which treats of insects.

One of a group of hymenopterous insects whose larvæ feed parasitically upon living insects. See Ichneumon,

Feeding on insects; insectivorous.

Fertilized by the agency of insects; -- said of plants in which the pollen is carried to the stigma by insects.

The science of the dissection of insects.

A genus of insects including the day flies, or ephemeral flies. See Ephemeral fly, under Ephemeral.

ternal, efficacy. Sir J. Stephen. Ephemeral fly (Zoöl.), one of a group of neuropterous insects, belonging to the genus Ephemera and many allied genera, which live in the adult or winged state only for a short time. The larvæ are aquatic; -- called also day fly and May fly.

The dorsal wall of the head of insects.

Pertaining to Epicurus, or following his philosophy. "The sect Epicurean." Milton.

In insects: The lateral piece behind the episternum. [Written also epimerum.]

A structure which overlaps the mouth of certain insects.

One of the lateral pieces next to the sternum in the thorax of insects.

ateral shell (Zoöl.), one in which a transverse line drawn through the apex of the umbo bisects the valve, or divides it into two equal and symmetrical parts. -- Mutually equilateral, applied to two figures, when every side of the one has its equal among the sides of the other.

ton. - Equinoctial points (Astron.), the two points where the celestial and ecliptic intersect each other; the one being in the first point of Aries, the other in the first point of Libra. -- Equinoctial time (Astron.) reckoned in any year from the instant when the mean sun is at the mean vernal equinoctial point.…

Standing partially spread and erect; -- said of the wings of certain insects.