Hindwings furthermore distinguished by a black, Y-shaped band and three reddish-brown crescents being proximally dusted with violet and extending within the tails, between the anterior median and the anal angle, in the shape of a demi-bow.

Female considerably larger than the male with a double yellow transcellular spot and a narrower black bordering round the forewings.

Beneath like the males but the three crescents dusted harmoniously with purple and whitish violet and embedded in the submarginal zone in a fine curve, are much narrower.

dehaani is extremely constant, and judging from the 15 males of my collection, only the colour of the cell of the forewing varies, being quite black in the rarest cases, but oftener lightened in its apical part being strewn with bluish-green scales.

The magnificent tripartite submedian bow of the hindwings, the elegant appearance of which reminds us of the crescents of Papilio paris and arcturus group, is about one third narrower.

A female is in the collection of the British Museum, differing from the male by the considerably larger orange spot and a somewhat lighter blue of the upper surface of the hindwings.