The Genus _Phoracantha_ contains a number of typical dark yellow or mottled brown beetles which in the larval state feed between the bark and sapwood of different gum trees when the trees are dead or dying; several species are common in firewood blocks about Sydney. The beetles are remarkable for long antennae fringed on the inner edge with fine hairs and short spines at the joints, and a single large spine on the sides of the thorax. _Phoracantha recurva_ has a very wide range from the North-west coast to Victoria; it measures under 1 inch in length; is of a general dull yellow tint, with the apical half of the wing covers crossed with a broad band of reddish brown. _P. tricuspis_ is a much larger, darker reddish brown beetle with mottled wing covers that lives in the timber of the ironbark gums. _P. semipunctata_, smaller than the last, has a regular pattern of dark brown on its back; it is common about Sydney N.S.W., and has a wide range over Australia. _Epithora dorsalis_ is remarkable for its very long fringed antennae, and is easily distinguished by its uniform reddish tint marked across the centre of the wing covers with a broad patch of dull yellow. It also has a wide range over the continent, and is often taken about Sydney in summer on flowering shrubs. _Aphanasium australe_ is a slender, light reddish brown beetle, under ¾ of an inch in length, the larvae of which feed in the stems of the prickly Hakea bushes. _Piesarthruis marginellus_ is a very distinctive dull reddish brown insect with the centre of the wing covers pale brown; the smaller more slender male is furnished with remarkable feathered antennae. The larva breeds and pupates in the centre of the branches of _Acacia longifolia_, and can be easily reared from infested wood, though it is very rarely found on the food plant, for as soon as it emerges it crawls up to the top of the tree and clings to the branchlets. _Strongylurus thoracicus_ is a handsome brown longicorn brightly marked with white on the sides of the thorax. Its larva is very destructive in gardens, cutting off large branches of white cedar and pittosporum bushes.