_Eurymela bicincta_ measures ½ an inch in length, and is broad in proportion; it is of a uniform dark shining blue tint, with the head, thorax, and base of the elytra bright red. It has a wide range and may often be found in colonies of 30 or 40 clustering together on a gum sapling. _E. rubrovittata_ is about the same size; it is black, with the under surface, face, and three narrow transverse bands round the thorax and elytra bright red. It has a range from Western Australia to Queensland. _E. speculum_ is a common species, recorded from Tasmania to Queensland; it is of a uniform dark blue-black tint with a white patch on either side of the face, and two irregular oval white spots on each wing cover. _E. pulchra_ is smaller, with the head and thorax marked with red, and two irregular broken bands of white on the side of each wing cover. Five species of the Genus _Aphrophora_ are described by Walker from Tasmania and Australia. The members of this genus are known as “Cuckoo-spittle Insects” from the remarkable habit the larvae have of enveloping themselves in a mass of frothy liquid, which is supposed to be formed to protect their soft bodies from insects that might prey upon them; it, however, really makes them very conspicuous objects on a twig, and several species of wasps are known in America to drag them out of this covering and use them to provision their nests. Our common “Cuckoo-spittle Insect,” found upon the she-oak (Casuarina), ti-tree (Leptospermum), and Melaleuca, is _Chalepus teliferus_; the larvae are pale-brown soft oval creatures, which jump when removed from the frothy liquid, and in this liquid they remain enveloped until they are ready to emerge. The perfect insect measures under ½ an inch in length, is of an elongate boat-shaped form; the head is produced in front as a slender process, curved upwards; the tips of the elytra come to a compressed point; the general colour is dull reddish brown, with the horn on the head ferruginous, and the wing covers mottled on the sides with black. A second species, _Chalepus pugionatus_, has been described by Stal from Australia. Family 3. Tree-Hoppers. MEMBRACIDAE.