_Anthrenus varius_ is our greatest pest; it is an introduced species, variable in size, the largest measuring about 1½ lines; it is almost round, with the small head furnished with clubbed antennae tucked down when at rest or disturbed; the ground colour is black, but it is so thickly clothed with grey and brown pubescence that it has a mottled buff appearance. Blackburn states that this is the species that has been confounded with _A. museorum_, which he says is not found in Australia. _A. nigricans_ is about the same size; black, with a delicate fascia of fine white hairs which give it a very distinctive character. About 44 species of Dermestidae are recorded from Australia: Fabricius and Linneaus described the earlier ones: Macleay others from Gayndah 1871. Reitter described more in several German publications: and Blackburn all the later ones (Trans. Royal Soc. S.A. 1891). Family 23. Pill Beetles. BYRRHIDAE. These are small beetles, found under stones. They take their popular name from their rounded form, which is more noticeable from the fact that their legs and antennae are retractile. Thirteen species are described from this country. _Microchaetes sphaericus_, described by Hope from W. Australia, is also found in N.S. Wales; it is a small, rounded, black beetle, under 2 lines in length; is very rugose on the upper surface, which is covered with tufts of brown scales which give it a curious roughened appearance and a brown tint. Family 24. GEORYSSIDAE. This family is a small obscure group. They are small beetles with short clubbed antennae, inhabiting damp wet ground. Only a dozen are described from all parts of the world, two of which are peculiar to Australia. King described one from Parramatta under the name of _Georyssus australis_: Macleay the second from Gayndah, Queensland. Family 25. PARNIDAE. These are aquatic beetles living under stones or close to water; they are thickly clothed with fine silky hairs like a waterproof coat; their antennae are thickened, and sometimes very short. Six species were described by King (Trans. Ent. Soc. N.S.W. 1864); and two others by Messrs. Blackburn and Lea (Proc. Linn. Soc. N.S.W. 1894–95). Most of these belong to the typical Genus _Elmis_, the members of which are found clinging to stones under water. [Illustration: Plate XVII.--COLEOPTERA. Family LUCANIDAE. 9. _Lamprima latreillei_ (W. S. Macleay). 11. _Cladognathus arfakanus_ (Lansb.). Family CETONIDAE. 4. _Trichaulax macleayi_ (Kratz). 7. _Eupoecila inscripta_ (Janson). 8. _Chlorobapta besti_ (Westwood). 10. _Diaphonia olliffiana_ (Janson). Family RHIPIDOPHORIDAE. 2. _Pelecotomoides conicollis_ (Castelnau). Family SCARABAEIDAE.