situated on each side of the
Metasternum, immediately behind the mesosternum epimera.

Metasternellum: the sternellum of the metathorax.

Metasternum: the underside or breast of the metathorax.

Meta-stethidium: = meta-thorax; q.v.

Metastigma: in Odonata, the spiracles of third thoracic segment.

Metastoma: in Orthoptera:= hypopharynx: q.v.

Metatarsus: applied to basal joint of tarsus, where that differs greatly
in length or otherwise from the other joints: see sarothrum.

Metatergum: = metanotum; q.v.

Metathoracotheca: the pupal covering of the meta-thorax.

Metathorax: the third thoracic ring or segment; bears the hind legs
and second pair of wings; variably distinct; sometimes closely united
with the mesothorax and sometimes appearing as a portion of the
abdomen.

Metatype: is a specimen named by the author after comparison with
the type; according to some, it should be also a topotype.

Metazona: in Orthoptera, the dorsal surface of the prothorax behind
the principal sulcus.

Metepimeron: in Odonata, lies behind the second lateral suture and
extends ventrally to the sternum.

Metepisternum: in Odonata, is the sclerite between the first and
second lateral thoracic sutures.

Meter: the standard of length in the metric system = 39.37 inches:
see centimeter and millimeter.

Meticulose -us: is a maculation in the form of a series of colored
flames.

Metinfraepisternum: in Odonata; the sclerite just above base of 3d
coxa; below metepisternum and before metepimeron.

Metochy: the relation borne to ants by the tolerated guests in
ant-hills; demanding nothing from and giving nothing to the ants; see
symphily and synecthry.

Metopidium: the anterior declivous surface of prothorax in
Membracidae.

Micans: shining: also a surface of which only parts are shining.

Microchaetae: small bristles, as opposed to macrochaetae, in Diptera.

Microergates: the dwarf workers among ants.

Micron: the unit of microscopic measurement = 001 mm.: represented
by the symbol mu: the symbol mu mu represents .001 of a micron.
{Scanner's note: the mu mu notation would no longer be valid.}

Micropterous: small winged.

Micropterism: the tendency to produce small wings; applied to a line
of variation.

Micropyles: minute openings in the egg, through which spermatozoa
enter.

Microsomites: small secondary rings or somites of the macrosomites
in the embryo, which afterward become the body segments.

Microthor