_Brontes lucius_, found in the same situations, is a darker reddish insect with the antennae very long and slender; the front of the thorax is spined on the sides; the elytra slightly convex, elongated and rounded at the extremities. _B. militaris_ can be easily distinguished from the last species by its darker colour, more flattened smooth elytra, with two oval light brown blotches on the basal half of the wing covers. About 60 species are described from Australia; among the chief writers are Grouvelle (Bull. Soc. Ent. France 1877); and other Journals 1876–1883, &c.; Olliff (Proc. Linn. Soc. N.S.W. 1885); Reitter 1878, and Blackburn 1892. Family 19. CRYPTOPHAGIDAE. In Masters’ Catalogue only one species (_Cnecosa fulvida_) is recorded, described by Pascoe in the “Journal of Entomology” 1865, from Sydney. Since then Blackburn has described 12 more species (Trans. Royal Soc. of S.A. 1887). They are all minute beetles which feed upon mould. In Europe the larvae of several genera live in the nests of bumble bees, and the perfect insects in flowers. Families 20–21. LATHRIDIDAE and MYCETOPHAGIDAE. These are composed of minute beetles found on fungus. Macleay in 1871 described some; Blackburn others (Trans. Royal Soc. S.A. 1887–1891); most of these were found in fungi or under bark. They are very small, the largest about ⅒ of an inch in length. In Europe the larvae of some species are covered with curious hairs, and the perfect beetles of others live in ants’ nests; but nothing is known about the habits of our species. Family 22. Bacon Beetles. DERMESTIDAE. This is a well-known group, for the hairy larvae do a great deal of mischief to sheepskins by gnawing holes in them when they are piled on each other; getting into bacon and other animal foods; even gnawing holes in bones. The beetles have somewhat short antennae clubbed at the tips; five jointed tarsi; the coxae of the fore-legs conical, the hind ones cylindrical. The typical Genus _Dermestes_ contains 5 species found in Australia; most of them have been introduced from other parts of the world, and several have penetrated far into the interior. _Dermestes cadaverinus_ measures over ⅓ of an inch; the upper surface is clothed with pale pubescence, and the under-surface thickly clothed with white hairs. Its general form is elongate; the head is tucked under the front edge of the thorax, which forms a slight hood.