th.

Vaginata: sheathed: an obsolete ordinal term for Coleoptera.

Vaginate: inclosed in a bivalved sheath.

Vagus: sympathetic nervous system; q.v.

Valgate: enlarged at bottom: club-footed.

Valve or Valvulae: the expanded plate-like galea of the maxilla in
many Hymenoptera.

Valve: a small, transverse or triangular piece behind the last full
ventral segment, at base of plates in male Jassidae and allies.

Valves: in Orthoptera, the corneous pieces of the ovipositor:=
corniculi in Lepidoptera, sometimes used to = harpes; q.v.

Valvula = vagina in its application to Dipterous mouth parts.

Valvulae: in Hymenoptera, branches of the genital forceps of male.

Valvular: when two parts join so as to form a valve between them.

Valvular process: in Odonata, a slender, unjointed process at the apex
of each genital valve.

Valvule: any small, valve-like process.

Variation: a departure in color or form, from the normal: the sum of
the departures from a mean type of any species: it is continuous
when there is no break between the extremes; discontinuous when
there are gaps without intermediate forms.

Variety: any departure from the normal type of a species which, while
retaining the specific characters, is yet recognizably different because
of climatic, seasonal or other influences; may occur with the type form
or as a geographical race.

Variola: a deep, rounded impression with defined edges.

Variolate -ose: with large, rounded impressions like pock-marks.

Vas deferens: = vasa deferentia, q.v.

Vasa deferentia: tubes from the seminal vesicles or testes of each side,
which usually unite into a single ductus ejaculatorius; q.v.

Vasa varicosa: the malpighian tubules.

Vascular: relating to the blood-vessels or circulatory system.

Vasiform orifice: in Aleurodidae, an ovate, triangular or semicircular
opening on the dorsum of the last abdominal segment.

Veinlets: in Orthoptera, are the minute transverse ribs or ridges
between the longitudinal veins.

Veins: the chitinous, rod-like structures supporting the wings, and
especially those extending longitudinally from base to the outer
margin nerves nervures; nervules.

Velum: a membranous appendage of the spurs at the apex of anterior
tibia in bees a broad process at inner end of fore tibia.

Velum penis: the thin membranous covering of the male intromittent
organ also applied to ether covering or shield-like structures of the
penis.

Velutinous: