beneath they are similarly produced; the basal segment entirely
ferruginous, with a black spot on each side.

_Hab._ Aru.

4. AGENIA ALTHEA. _A._ nigra; facie pube argentato-alba vestita, thorace
abdomineque sericeo pubescentibus; alis hyalinis, venis nigris.

_Female._ Length 5 lines. Black; the face silvery; the anterior margin
of the clypeus rounded and narrowly smooth and shining; tips of the
mandibles ferruginous; the mandibles elongate and pale rufo-testaceous.
Thorax: the metathorax finely transversely rugose, the sides with bright
silvery-white pubescence; the coxae, the thorax beneath and on the sides,
with fine silky sericeous pile; the anterior tibiae and tarsi, and all
the femora at their apex beneath, ferruginous; wings hyaline and
iridescent, nervures black; the outer margin of the tegulae testaceous.
Abdomen shining, and with a fine silvery sericeous pile; the apical
margins of the segments narrowly rufo-piceous; the terminal segment with
an elongate, smooth, shining space, which extends to the apex, which is
testaceous.

_Hab._ Aru.

5. AGENIA ALCYONE. _A._ nigra, pilis sericeis cinereis vestita; antennis
pedibusque ferrugineis, alis hyalinis; abdomine petiolato; marginibus
apicalibus segmentorum flavis.

_Male._ Length 7 lines. Black; the antennae, tips of the mandibles, and
the legs ferruginous; the scape in front, a narrow line on the inner
orbit of the eyes, and the anterior portion of the clypeus yellow; the
antennae fuscous above towards their base. Thorax: the femora beneath
towards their base, the trochanters and coxae, except their apex, black;
the apical joints of the intermediate and posterior tarsi fuscous; wings
hyaline, the nervures fusco-ferruginous, the tegulae reddish-yellow.
Abdomen petiolated; the apical margins of the segments with
reddish-yellow fasciae; beneath, the margins of the segments are
rufo-piceous, not fasciated.

_Hab._ Aru.

6. AGENIA AMALTHEA. _A._ nigra, pilis tenuibus cinereis sericeis
vestita; antennis antice pedibusque anticis et intermediis antice
ferrugineis; abdomine petiolato; alis hyalinis bifasciatis.

_Female._ Length 6 lines. Black; the face densely covered with silvery
pile; the antennae in front, the anterior margin of the clypeus and the
tips of the mandibles ferruginous; palpi elongate and pale
rufo-testaceous. Thorax: the posterior margin of the prothorax narrowly,
the tegulae, the anterior and intermediate femora in front, the posterior
pai