The Genus _Metriorrhynchus_ contains about 50 small, elongate, flattened beetles of a dull red colour marked with black; the wing covers are deeply ribbed but soft and flabby. The larvae are curious, smoky black creatures with blunt spines along the sides of the body, and live under stones or logs. _M. rufipennis_, one of the largest, is ¾ of an inch in length; the head and thorax are black and roughened; the wing covers are light red, deeply ribbed and reticulated: Waterhouse figured and described many of these (Trans. Entom. Soc. 1877). Our true fire-flies belong to the Genera _Luciola_ and _Atyphella_. On these Olliff has written an interesting paper entitled “New Species of Lampyridae with notes on the Mount Wilson Fire-fly” (Pro. Linn. Soc. N.S.W. 1889). Our fire-flies are small, light brown beetles, which during the day cling to the foliage, flying about at night, emitting a bright flash of phosphorescent light from the tip of the abdomen as they move their wings. Several species are found on the Blue Mountains and in the tropical scrubs of North Queensland; they are very brilliant after night-fall: _Luciola flavicollis_, ¾ of an inch, is our common species. The Soldier Beetles, chiefly belonging to the Genera _Telephorus_ and _Selenurus_, are common upon low bushes and flowering shrubs. _Telephorus pulchellus_, ½ an inch in length, is a slender, dull orange coloured beetle; the dorsal surface is shining blue black except the apical half of the thorax, which is bright yellow. This beetle sometimes appears in great numbers; I have seen the Melaleuca scrub on the Blue Mountains black with them. Family 34. Hunting Beetles. CLERIDAE. There are many handsome little beetles in this family which spend their time hunting over logs, tree trunks, or in flowers to catch smaller insects which they devour; most of them lay their eggs in the bodies of the pupae of wood moths and other insects. A freshly fallen tree is a good locality to look for Clerids, as they find many small beetles attracted by the withering bark: in Europe the larvae of several groups infest the nests of wild bees.