The Genus _Elodina_ contains several small, pearly white butterflies, with wings edged with black. The small white, _Elodina angulipennis_, is found about Sydney, ranging as far north as Mackay, Queensland. Our common white butterfly known under the name of _Pieris teutonia_, and the sole representative of that well defined genus, has been recently identified as _Belenois java_, and as Sparrman described it some few years before Fabricius, this well-known name will unfortunately have to give way. This butterfly has a wide range over Australia, especially in the interior, where several native shrubs belonging to the _Capparidae_ are plentiful; upon these the slender brown and yellow caterpillars feed. This is the species that sometimes comes flying over the eastern coast in immense swarms. It measures 2½ inches across the wings, and is black and white on the upper surface, with the under portion more mottled with black and canary yellow. It ranges from Australia to Fiji, Tonga, and the Malay Archipelago. The smaller Whites, which have the under side of the hind wings of a more uniform yellow tint, are represented by _Appias (Tachyris) ega_, first described by Boisduval in 1836; it has an extended range from Victoria to Cape York, Queensland. The typical Genus _Delias_ is represented in Australia by 8 species, three of which can be collected from Sydney to Cape York, and two others from South Australia northward. The Painted Delias, _D. harpalyce_, first figured by Donovan in 1805, measures 3 inches across the wings, which on the upper surface are creamy white, broadly margined on the apical half with black, the fore pair banded with a row of white spots; on the under surface the white markings above are much broader, and the hind wings are blotched with a bright red band surrounded with black but lined with white. The larvae feed upon the native mistletoe (_Loranthus_) which grows upon the she-oaks, and are slender, dark coloured caterpillars covered with fine hairs. They are gregarious in their habits, often 20 to 30 in a family, and not only do they keep together when feeding, but they spin a curious web over the denuded twigs of their food plant to which they attach themselves when pupating. The pupa is dark brown, slightly over 1 inch in length, armed with short black spines along the sides of the body, and the front of the head is furnished with a curious two-pronged fork.