cally of butterflies.

Aurelian: a lepidopterist.

Aureolate: with a diffused colored ring.

Aureole: a ring of color which is usually diffuse outwardly.

Aureous -eus: gold-colored.

Aurichalceous: brassy yellow.

Auricle -cula: an appendage resembling a little ear; in Odonata the
tumescent area at the sides of the second abdominal segment: in
Andrenidae, a short membranous process placed laterally on the
ligula.

Auricular: applied to the space or cavity surrounding the dorsal
vessel.

Auriculate: with an ear-like appendage or, in antennae, with the basal
joint distended into a concave, plate-like ear which envelops the rest
of the structures.

Auriculo-ventricular: the outer valves of the heart between the
auricular space and the chamber.

Auriculo-ventricular openings: are the lateral openings into the heart
by means of which the blood is admitted into it.

Auritus: with two ear-like spots or appendages.

Auroral spot: applied to the bright orange colored spot at the apical
area of Anthocharis.

Auroreous -eus: red, like the aurora borealis [crimson lake].

Austral: is that faunal region which covers the whole of the United
States and Mexico except the boreal mountains and tropical lowlands:
divided into transition, upper, lower and gulf strip: see boreal and
tropical.

Austroriparian faunal area: that part of lower austral zone covering
the greater part of the South Atlantic and Gulf States. Begins near
mouth of Chesapeake Bay, covers half or more of Virginia, North and
South Carolina, Georgia, Florida, Alabama, all of Mississippi and
Louisiana, east Texas, nearly all of Indian Territory, more than half of
Arkansas and parts of Oklahoma, s. e. Kansas, so. Missouri, so.
Illinois, s. w. corner of Indiana and bottom lands of Kentucky and
Tennessee.

Autotype: any specimen identified by the describer as an illustration
of his species and compared with the type or co-type.

Auxiliary: additional, or supplementing.

Auxiliary vein: in Diptera (Will.), = subcosta (Comst.).

Axillae: two small, subtriangular sclerites at the lateral basal angles of
the meso-scutellum in Proctytripidae.

Axillary: placed in the crotch or angle of origin of two bodies; arising
from the angle of ramification.

Axillary area: see anal area.

Axillary calli: see calli axillary.

Axillary cell: in Diptera (Will.), = 2d anal (Comst.).

Axillary excision: = a. incision, q.v.

Axillary incision: Diptera; an incis