Female. Length 9 lines. Ferruginous, with the abdomen black; the anterior margin of the clypeus rounded. The metathorax transversely rugose; the pectus, and coxæ at their base within, black; wings brown, with a violet iridescence, their base rufo-hyaline; the intermediate and posterior tibiæ 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. cæruleo-nigra; abdomine iridescente, alis cæruleo-violaceoque splendidè 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 tibiæ 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 cinereâ sericeâ vestitus; alis fuscis, albo fasciatis.