_Stibopteryx costalis_ is a stout bodied insect with a wing expanse of 3 inches, a large, dragon-fly-like head, and narrow rounded wings banded with parallel bands of chocolate brown. It ranges from Sydney right round Australia. The NEMOPTERIDES are a very curious group of lace-wings, which have the hind pair of wings produced into slender or clubbed appendages of most peculiar form. Kirby (Annals and Magazine of Natural History 1900) has listed all the known species from all parts of the world, 33 species in 7 genera. _Chasmoptera hutti_, described by Westwood from Western Australia, has a wing expanse of 1½ inches, and the hind pair are produced into a spoon-shaped tail. _Croce attenuata_ is a smaller, dull coloured, brown insect, with the fore wings like those of a mayfly, and the hind pair forming a pair of antennae-like processes longer than the body. It was taken by my correspondent, Mrs. Black, round a lamp, and comes from North Queensland. It is described by me in the Proceedings of the Linnean Society 1904. The MANTISPIDES are lace-wings that in general form, imitate the orthopterous mantis; with the same elongate neck, spined fore legs and broad head, but the structure of the wings soon shows its affinity to the lace-wings. We have some very fine species in Australia, which are usually found hiding among the foliage of trees, and are generally captured when beating the bush for beetles. Nothing is known about the earlier stages of any of our species, but Brauer studied the larval and pupal forms of the European _Mantispa_, and found that the eggs were stalked; the larvae are long slender creatures with large jaws. Westwood has figured and described a number of our species (Trans. Ent. Soc. 1852). _Mantispa biseriata_, one of our largest species, measures up to 2½ inches across the outspread wings. Its general colour is dull reddish brown; the wings are mottled with very fine black dots, and the stigma on the fore wing forms a dull red blotch. It has a wide range from Victoria to North Queensland. _Mantispa strigipes_ is a smaller darker species, with no distinct stigma but a stripe of dull red along the front margin of both pairs of wings, thickest toward the extremities. It ranges over Victoria and N.S. Wales. The HEMEROBIIDES are well represented in Australia by some very beautiful insects, which when at rest are recognised by the way in which their wings are folded against each other, forming a ridge above the back; the antennae, generally long, consist of a number of short annular joints. The eggs are laid upon the food plant; the larvae feed upon small insects. [Illustration: =Fig. 32.=--_Croce attenuata_ (Froggatt). The Thread-winged Nemopteron. (Pro. Linn. Soc. N.S.W.)]