6. SCOLIA AGILIS. _S._ nigra, mandibulis clypeoque flavis, alis fulvo-hyalinis, abdomine prismatico flavo quadrifasciato. _Male._ Length 8 lines. Black and punctured, with thin long griseous pubescence; the vertex, disk of the thorax, and the abdomen shining; the mandibles and clypeus yellow, the latter with a black bell-shaped spot in the middle; wings fulvo-hyaline, the nervures ferruginous; the tibiae with a yellow line outside. Abdomen beautifully prismatic; the first and three following segments with a yellow fascia on their apical margins, the second and two following much attenuated in the middle, or the fourth interrupted. _Hab._ Celebes. 7. SCOLIA FULVIPENNIS. _S._ nigra, antennis capiteque supra basin antennarum rubris, alis fulvo-hyalinis. _Male._ Length 7 lines. Black; the antennae and the head above their insertion ferruginous, the scape black, the head coarsely punctured. Thorax: coarsely punctured; the mesothorax with an abbreviated deeply impressed line in the middle of its anterior margin; wings fulvo-hyaline, the nervures ferruginous; the apex of the wings slightly fuscous, the anterior pair with two submarginal cells and one recurrent nervure. Abdomen: shining, punctured, and prismatic. _Hab._ Celebes. 8. SCOLIA ALECTO. _S._ nigra, capite supra basin antennarum rubro; alis nigris violaceo micantibus. _Female._ Length 14 lines. Black and shining; head red above the insertion of the antennae, very smooth and glossy, with a few punctures at the sides of and in front of the ocelli; antennae black; the mandibles with a fringe of ferruginous hairs on their inferior margin. Thorax: smooth on the disk, which has a few scattered punctures at the sides; the scutellum punctured and shining; the thorax in front and the metathorax with black pubescence, the latter widely emarginate at the verge of the truncation, the lateral angles produced; wings black with a bright violet iridescence. Abdomen punctured, with the middle of the second, third, and fourth segments smooth and shining in the middle; the first segment with a smooth shining carina at its base slightly produced forwards, the abdomen with a slight metallic lustre. The wings with one marginal and three submarginal cells, and one recurrent nervure. _Male._ Smaller than the female, and differs in having the clypeus red and the red colour running down behind the eyes, the antennae longer, and the abdomen with a bright metallic iridescence. _Hab._ Celebes. 9. SCOLIA MINUTA. _S._ nigra, abdomine iridescente, segmentorum marginibus apicalibus flavo fasciatis, alis subhyalinis iridescentibus.