_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 pair towards their apex beneath, the anterior tibiae and tarsi, the intermediate and posterior tibiae more or less beneath, and their tarsi, ferruginous; the tarsi sometimes dusky above; the wings hyaline, a narrow fuscous fascia at the apex of the externo-medial cell, and a broad one crossing at, and being the width of, the second and third submarginal cells; tips of the wings milky-white; the metathorax rounded posteriorly, transversely finely rugose and densely covered with short silvery-white pubescence at the sides and apex. Abdomen petiolated, smooth and shining, with the apex and the margins of the segments narrowly rufo-piceous. _Hab._ Aru. Gen. PRIOCNEMIS, _Schioedte_. 1. PRIOCNEMIS PULCHERRIMUS. _P._ laete ruber; alis flavo-hyalinis, apice late fusco, abdominis lateribus nigris. _Female._ Length 7-1/2 lines. Bright red; the anterior margin of the clypeus with a minute tooth in the centre; the tips of the mandibles fuscous. The metathorax slightly striated transversely, and with a central as well as a lateral longitudinal groove; the wings flavo-hyaline, their apex with a fuscous cloud, which commences at the base of the first discoidal cell, the extreme tips pale; the tibiae and tarsi with short slender spines; the extreme apex of the joints of the posterior tarsi black. Abdomen: the short petiole of the basal segment, and the sides of the second, third, and fourth segments black, leaving a red line down the middle of each; beneath, the second, third, and base of the fourth segments black. _Hab._ Aru. 2. PRIOCNEMIS FERVIDUS. _P._ capite, antennis, thorace pedibusque ferrugineis; abdomine nigro; alis fuscis basi subhyalinis.