the cell formed between the postcostal and great medial veins to the tip of the wings.
The antennæ are rather long, slender, and bipectinated to the tip, the pectinations being of nearly equal length throughout, those at the extremity very slightly longer, so that the antennæ appear at first sight rather clavate.
Expansion of the wings four inches and a quarter. Head and thorax bluish-black; antennæ of the same colour. Anterior wings black, with a considerable number of small spots scattered over the surface, five of which, placed towards the base, are yellow, the rest white; the nervures from the middle to the apex are each accompanied by a dark red stripe; posterior wings black from the base to beyond the middle, with a few white spots encircled with blue, the exterior part brilliant mazarine blue, with a considerable number of white spots: abdomen deep blue, all the segments having a small white spot on each side. On the under side the spots are smaller and more numerous, most of them encircled with blue, the marginal row double; the nervures without the red stripe.
Mr. Hope's specimen is from Assam; and we have seen another very fine one in the possession of James Wilson, Esq., which was received from the neighbourhood of Serampore. Drury gives Surinam as the locality of his insect; but the probability that there is some mistake in this, is much greater than the likelihood that it would occur so remotely from what is evidently its native region.
