Part 157

Ustulatus: scorched: applied to a maculation that has the appearance of having been burned in.

Uterus: the vaginal portion of oviduct: the sometimes enlarged portion of the vagina at junction of the oviducts: = calyx, q.v.

Uterus masculinus: a pouch or sac into which the ductus ejaculatorius opens in the Symphyla.

Utriculi breviores: small vesicular sacs connected with the seminal vesicles in crickets and some other insects.

Utriculi majores: large vesicular sacs or tubular structures connected with the seminal vesicles in crickets and some other insects.

Utriculus: a little bag or hollow vesicle.

Vacuolate: with vacuoles or small cavities, empty or filled with a watery fluid.

Vagina: the tubular structure formed by the union of the oviducts in the female, opening externally to admit the passage of the egg to the ovipositor: receives the penis of the male in copulation and is sometimes called oviduct: "every part, the office of which is to cover, protect or defend the tongue": "the bivalve coriaceous sheath or cover of the spicula": generally, a sheath.

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.