The members of the Genus _Clytus_ are active little ant-like beetles, common in the more tropical parts of Australia, running up and down on freshly fallen tree trunks in the bright sunlight, or hunting over flowering shrubs; some are richly marked with golden yellow or red on the rounded thorax. _Clytus curtisi_, measuring under 1 inch in length, is black spotted and mottled with white. One of our commonest and most widely distributed flower haunting longicorns is _Aridaeus thoracicus_, a reddish yellow beetle with short rounded thorax, and the wing covers crossed in the centre with two black V-shaped bands. It is very variable in size, the largest measuring nearly 1 inch in length. _Purpuricenus quadrinotatus_ is a very handsome black and bright red beetle about ¾ of an inch in length, with a short broad almost globular thorax, and a short body round at the apex. It is common along the Flinders River N. Queensland upon low scrub, and I have taken them in all variations of red and black; usually the head and thorax are black, with the wing covers red blotched with black; a variety with the thorax red is described as a distinct species. The LAMIINAE comprise the third division which, usually stout and broad in proportion, are found chiefly upon branches or twigs feeding upon bark; and are frequently very numerous upon fallen timber in forest clearings. They differ from the former group in having the front coxae round and deeply embedded; the maxillary palpi pointed at the tips; and the fore tibiae with a more or less distinct groove on the inner side. _Microtragus mormon_ is typical of several closely allied genera of short, thickly coated longicorns, with the rounded slightly spined thorax and the tapering body ridged or coarsely punctured; they are found upon logs or tree trunks on the ground, and somewhat resemble the ground weevils. This species comes from Kalgoorlie, W. Australia, but has a wide range over the western country; it is of a dull reddish brown tint, and measures about 1 inch in length. _Ceraegidion horrens_, not uncommon in the Illawarra district N.S.W., is a smaller darker coloured beetle covered with stout spines upon the dorsal surface of the thorax and elytra. The Genus _Monohammus_ contains a number of very fine brown or mottled beetles with long stout antennae; the small rounded thorax produced into a blunt spine on either side; and the broad wing covers arcuate at the tips and sometimes spined on the sides. _M. holotephrus_ is of a uniform dull buff tint and measures over 1 inch in length; it comes from S. Australia and Queensland. _M. ovinus_ is a much smaller species with the thorax spined on the summit and sides; it is of a pale brown tint finely mottled with grey. It has a wide range, being recorded from Kalgoorlie W.A., N.S. Wales, Queensland, and S. Australia. [Illustration: =Fig. 94.=--_Batocera frenchi_ (Blackburn). The great Fig-tree Longicorn. (Original Photo. Burton.)]