_Sphenotrochus emarciatus_, Duncan. Cainozoic: Victoria, S. Australia, and Tasmania. _Ceratotrochus exilis_, Dennant. Cainozoic: Victoria. _Conosmilia elegans_, Duncan. Cainozoic: Victoria. _Balanophyllia armata_, Duncan. Cainozoic: Victoria. _Thamnastraea sera_, Duncan. Cainozoic: Victoria and Tasmania. _Graphularia senescens_, Tate sp. Cainozoic: Victoria and S. Australia. HYDROZOA. _Clathrodictyon_ (?) _regulare_, Rosen sp. Silurian: Victoria. _Actinostroma clathratum_, Nicholson. Devonian: W. Australia. _Stromatoporella eifeliensis_, Nich. Devonian: W. Australia. _Dictyonema pulchella_, T. S. Hall. Lower Ordovician: Victoria. _Ptilograptus_ sp. L. Ordovician: Victoria. _Callograptus_ sp. Lower Ordovician: Victoria. GRAPTOLITES. _Bryograptus victoriae_, T. S. Hall. Lower Ordovician (Lancefield Series): Victoria. _Tetragraptus fruticosus_, J. Hall. L. Ordovician (Bendigo Series): Victoria. _Didymograptus caduceus_, Salter. L. Ordovician (Castlemaine Series): Victoria. Also New Zealand. _Didymograptus bifidus_, J. Hall. L. Ordovician (Castlemaine Series): Victoria. Also New Zealand. _Trigonograptus wilkinsoni_, T. S. Hall. L. Ordovician (Darriwill Series): Victoria. _Dicranograptus ramosus_, J. Hall sp. Upper Ordovician: Victoria. _Monograptus dubius_, Suess. Silurian: Victoria. _Retiolites australis_, McCoy. Silurian: Victoria. * * * * * LITERATURE. SPONGES. Cambrian.--Tate, R. Trans. R. Soc. S. Austr., vol. XV. (N.S.), 1892, p. 188. Ordovician.--Hall, T. S. Proc. R. Soc. Vict., vol. I. pt. I. 1889, pp. 60, 61 (_Protospongia_). Idem, ibid., vol. XI. (N.S.), pt. II. 1899, pp. 152-155 (_Protospongia and Stephanella_). Silurian to Carboniferous.--Salter, J. W. Canad. Org. Rem. Dec. I. 1859, p. 47. Etheridge, R. jnr. and Dun, W. S. Rec. Geol. Surv. New South Wales, vol. VI. 1898, pp. 62-75. Chapman, F. Proc. R. Soc. Vict. vol. XVIII. (N.S.), pt. 1, 1905, pp. 5-15. Carbopermian.--Etheridge, R. jnr., in Geol. and Pal. Q., 1892, p. 199. Cretaceous.--Bowerbank, J. S. Proc. Zool. Soc. Lond., 1869, p. 342. Etheridge, R. jnr. in Geol. and Pal. Queensland, 1892, pp. 438, 439 (_Purisiphonia_). Cainozoic.--McCoy, F. Prod. Pal. Vict., Dec. V. 1877. Chapman, F. Proc. R. Soc. Vict., vol. XX. (N.S.), pt. 2, 1908, pp. 210-212 (_Ecionema_). Hinde, G. J. Quart. Journ. Geol. Soc., vol. LVI., 1900, pp. 50-56 (calcisponges). Idem, Bull. Geol. Surv. W. Austr., No. 36, 1910, pp. 7-21 (sponge-spicules). ARCHAEOCYATHINAE. Etheridge, R. jnr., Trans. R. Soc. S. Austr., vol. XIII. 1890, pp. 10-22. Taylor, T. G. Mem. Roy. Soc. S. Austr., vol. II., pt. 2, 1910 (a monograph). CORALS.