In the Genus _Uracanthus_ the beetles are long and slender, with almost cylindrical bodies, and the thorax contracted slightly behind the head. _Uracanthus triangularis_ in Victoria confines its attention almost exclusively to the branches of the black wattle; but in N.S. Wales I have bred it from a number of different shrubs. It measures about 1 inch in length; is of a general uniform reddish brown colour, but so thickly clothed with fawn-coloured pubescence that there is only an angular bare reddish patch on the sides of the wing covers. _U. cryptophagus_, the largest known species, is nearly twice the length, more cylindrical in form, and of a uniform buff tint. In its native state it fed in the northern scrubs of N.S. Wales upon the wild lemon, from which it migrated to the cultivated orange, and the larvae burrowing through the branches did a great deal of mischief to the trees. _Syllitus grammicus_ is a slender reddish brown beetle with six parallel grey lines running down the elytra, and is under ½ an inch in length. _Lygesis mendica_ breeds on the twigs of the black wattle in the neighbourhood of Sydney. It measures under ½ an inch in length; is of a uniform reddish brown colour, and has a slender head and long cylindrical thorax. The wing covers are rounded at the tips, and the whole insect is clothed with stout white hairs. _Macrones rufus_ is a long, slender, bright reddish brown beetle about 1¼ inches in length; the thorax is roughened into rounded bosses; the body is narrow in the centre, but swells out into a rounded apex; the wing covers narrow, and not reaching to the tip of the abdomen give it a very wasp-like appearance. It is usually taken upon flowers in the summer months. [Illustration: =Fig. 91.=--_Strongylurus thoracicus_ (Pascoe). The Pittosporum tree borer, and larva. (“Agricultural Gazette,” N.S.W.)] [Illustration: =Fig. 92.=--_Lygesis mendica_ (Pascoe). The slender grey-haired Longicorn. (“Agricultural Gazette,” N.S.W.)] [Illustration: =Fig. 93.=--_Uracanthus cryptophaga_ (Olliff). The great Orange-tree Borer. (“Agricultural Gazette,” N.S.W.)]