This species, which was then quite new and which I named after Sir James Brooke, was very rare.

It was seen occasionally flying swiftly in the clearings, and now and then settling for an instant at puddles and muddy places, so that I only succeeded in capturing two or three specimens.

In some other parts of the country I was assured it was abundant, and a good many specimens have been sent to England; but as yet all have been males, and we are quite unable to conjecture what the female may be like, owing to the extreme isolation of the species, and its want of close affinity to any other known insect.
One of the most curious and interesting reptiles which I met with in Borneo was a large tree-frog, which was brought me by one of the Chinese workmen.

He assured me that he had seen it come down in a slanting direction from a high tree, as if it flew.

On examining it, I found the toes very long and fully webbed to their very extremity, so that when expanded they offered a surface much larger than the body.