from The Century Dictionary.
- noun A genus of ctenophorans, typical of the family Bolinidæ.
Sorry, no etymologies found.
Many invertebrates are recorded from the islands, including two endemic butterflies, Hypolimnas bolina euphorioides and Junonia villida chagoensis.
Mr. Darwin's attention to the fact, that in the Diadema bolina the brilliant blue colour surrounding the white spots is only visible when we look towards the insect's head, and this is true of many of the iridescent colours of butterflies, and probably depends upon the direction of the striae on the scales.
In the allied species, Diadema bolina, the females are also very different from the males, but are of dusky brown tints, evidently protective and very variable, some specimens having a general resemblance to the uneatable Euplaeas; so that we see here some of the earlier stages of both forms of protection.
Mr. Trimen states that the male Danais chrysippus is sometimes deceived by the female Diadema bolina which mimics that species.