raska, Kansas, Oklahoma
and Texas, and east. Colorado and New Mexico; covers plains of
Columbia, Malheur and Harney in Oregon and Washington. In
California encircles Sacramento and San Joaquin Valleys and forms a
narrow belt around Colorado and Mohave deserts. In Utah covers Salt
Lake and Sevier deserts. In Idaho the Snake plains. In Nevada and
Arizona irregular areas of suitable elevation.

Uranidin: a yellow coloring matter in some Coleoptera and
Lepidoptera.

Urceolate: pitcher-shaped; swelling in the middle.

Ureter: the stalk connecting the malpighian tubules, when they form
large tufts, with the intestine.

Uric acid: the characteristic nitrogenous excretion of the malpighian
or urinary tubules: composition, C5H4N4O3 (von Furth).

Urinary vessels: = malpighian tubules; q.v.: has also been applied by
older authors, to anal glands.

Urite: an abdominal segment and, specifically, its ventral portion.

Uromere: any of the abdominal segments of an arthropod.

Uropoda: any of the abdominal feet of arthropods.

Uropygium: the ovipositor when it is a mere extension of the
abdominal segments.

Urosome: the abdomen.

Urosternite: the sternal or under piece of the uromeres.

Urticating: nettling; applied to specialized hairs or processes on the
bodies of certain caterpillars, which cause a stinging or burning
sensation on the skin.

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.

V

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 shea