_Female._ Length 9 lines. Ferruginous, with the abdomen black; the anterior margin of the clypeus rounded. The metathorax transversely rugose; the pectus, and coxae at their base within, black; wings brown, with a violet iridescence, their base rufo-hyaline; the intermediate and posterior tibiae with a double row of spines, all the tarsi spinose. Abdomen shining black, with the extreme apex slightly ferruginous. _Hab._ Aru. Gen. MACROMERIS, _St.-Farg._ 1. MACROMERIS IRIDIPENNIS. _M._ caeruleo-nigra; abdomine iridescente, alis caeruleo-violaceoque splendide micantibus; pedibus mutieis, simplicibus. _Female._ Length 12 lines. Blue-black; abdomen with a changeable iridescent pile; head and thorax with a black velvety pubescence; the metathorax very finely rugose and opake; the legs simple; the posterior tibiae villose within; the wings very dark brown, with a splendid violet and blue iridescence. _Male._ Very closely resembling the female, but rather smaller; the anterior and intermediate femora more incrassate, and all the femora with a simple row of teeth or serrations on their inferior margins. _Hab._ Aru. Although this species of _Macromeris_ is very similar in colour to the _M. violacea_ of St.-Fargeau, the femora are not so thick as in that species, not in fact much more so than in the female; and the row of teeth beneath is a strong specific character. Gen. SALIUS, _Fabr._ 1. SALIUS MALIGNUS. _S._ niger, pube cinerea sericea vestitus; alis fuscis, albo fasciatis. _Female._ Length 9 lines. Black, and covered with a fine thin ashy pile; the scape in front, and the anterior margin of the clypeus narrowly, obscure yellow; the mandibles ferruginous at their apex, which has a single notch; the palpi pale rufo-testaceous. Thorax: the prothorax with a slightly interrupted narrow fascia a little before its posterior margin, and the scutellum, yellow; the anterior femora broadly dilated, and, as well as the anterior tibiae, ferruginous within; the intermediate tibiae ferruginous at their apex in front, and the posterior pair with a yellowish-white spot at their base outside; the calcaria pale testaceous, the claws ferruginous, the anterior tarsi entirely so, but more or less obscure; the posterior tibiae slightly spinose; the anterior wings brown, with a white fascia crossing at the first discoidal cell, and a second at the apex of the third submarginal, the extreme base and the anterior margin of the externo-medial cell hyaline. Abdomen: the apical margins of the segments with a little bright silvery pile. _Hab._ Aru. Gen. MYGNIMIA, _Smith_. 1. MYGNIMIA ASPASIA. _M._ caeruleo-nigra; capite thoraceque pube holosericea vestitis; alis fulvo-hyalinis; abdomine pilis iridescentibus vestito.