If we compare this with Borneo, which out of 29 species has only two not found elsewhere, the difference is as striking as anything can be.

In the family of the Pieridae, or white butterflies, the difference is not quite so great, owing perhaps to the more wandering habits of the group; but it is still very remarkable.

Out of 30 species inhabiting Celebes, 19 are peculiar, while Java (from which more species are known than from Sumatra or Borneo), out of 37 species, has only 13 peculiar.

The Danaidae are large, but weak-flying butterflies, which frequent forests and gardens, and are plainly but often very richly coloured.

Of these my own collection contains 16 species from Celebes and 15 from Borneo; but whereas no less than 14 are confined to the former island, only two are peculiar to the latter.