_Eumecopus australasiae_ has a wide range, and is often found in wattle scrub resting on tree-trunks. It measures about an inch in length, is a very active insect, and flies readily when disturbed. Its colour is dull brown, mottled with small dull yellow spots; these form several short parallel rows on the pointed head, and there is a distinct yellow spot at the apex of the scutellum. The Genus _Poecilometis_ contains 14 species peculiar to Australia. They are of the same general form as the last group, are found in similar localities, and are all of a more or less reddish-brown tint. _Poecilometis histricus_, about ¾ of an inch in length, is of a light brown colour with ochreous markings. _P. gravis_, found upon wattle scrub, is smaller than the last species and is of a more reddish-brown tint. _P. strigatus_, about ½ an inch in length, is of a similar brownish colour. _Dictyotus plebejus_ is one of our commonest little dull brown bugs; is about ¼ of an inch in length and nearly as broad as long. It has a wide range over Eastern Australia, and is found, often in numbers, under stones, dry cowdung, or dead logs. The genus is peculiar to Australia, and contains 18 described species. _Commius elegans_ is common on the foliage of the native cherry about Mittagong, N.S.W.; it is just under ½ an inch in length; is of a general blue black colour with the thorax and under surface yellow blotched with black; the sides and apex of the scutellum are edged with yellow; and a narrower transverse band of dull white crosses the back just below the tip of the scutellum. It has a wide range over Australia, and was described by Donovan in 1805. _Plautia nigripennis_ is a much smaller plant bug, with the upper surface green, and the sides and tips of the elytra reddish brown; it ranges up the Queensland coast from the Tweed River, N.S. Wales. _P. affinis_ is a pretty little green insect which feeds on rice and other plants in the northern district of N.S.W. It measures about ⅓ of an inch in length. The members of the Genus _Cuspicona_ range from India to Australia and New Caledonia; eight species are described from Australia. _Cuspicona simplex_ is a finely rugose and green coloured bug about ⅓ of an inch in length, with the sides of the thorax produced into blunt spines, and the elytra broadly rounded to the tip. It infests many field crops and has been reported as doing serious damage to growing potatoes. _C. thoracica_ is a small green species, with the thorax produced into a stout spine on each side. The head and a broad band across the thorax are reddish brown; the margins of the thorax and the centre of the scutellum are marked with bright yellow. It is common in the eastern coastal districts, and has been found feeding on ground crops about Gosford, N.S.W. _C. forticornis_ is a larger green species with the thoracic spines red, and the dorsal surface thickly and finely punctured. It is common in the northern scrubs of N.S. Wales.