president's address. 567 



and Mesozoic Fossils from Central Australia, pp. 5-G, pi. i. tigs. 

 2-5. 



Ophileta Gilesi, spec, nov., R. Etheridge, Junr., ibid. pp. 6-7, 

 pi. I. figs. 6-8. 



Eaphistoma Brownii, R. Etheridge, Brown's Leigh's Creek 

 Report, pp. 9, 10, and 13, pi. i. figs. 1-3. 



Murchisonia sp., Brown's Further Report, Leigh's Creek and 

 Hergott Districts, and Geology of Finke River, 1892, p. 9. 



Pleurotomarioid univalve, Brown's Further Report, Leigh's 

 Creek and Hergott Districts, and Geology of Finke River, 1892, 

 p. 9. 



Trochoid univalve, Brown's Further Report, Leigh's Creek and 

 Hergott Districts, and Geology of Finke River, 1892. p. 9. 



Orthoceras Tatei, spec, nov., R. Etheridge, Additional Silurian 

 and Mesozoic Fossils, &c., p. 7, and Brown's Leigh's Creek Report, 

 1891, p. 10, t. I. f. 4. 



Orthoceras Gossei, spec, nov., R. Etheridge, Junr., Additional 

 Silurian and Mesozoic Fossils, &c., p. 7, pi. i. figs. 9-10. 



Endoceras Warhurtoyii, spec, nov., R. Etheridge, Junr., ibid. 

 p. 7, pi. I. figs. 12-13. 



(4) New Zealand. Sir James Hector describes Lower Silurian 

 rocks in the north-western area of the Nelson District,"^ termed 

 by him the Aorere Series. Captain Hutton describes these same 

 rocks. t Both these authorities show a strong unconformability 

 between the Aorere Series and the schists of the underlying 

 Manapouri System. 



The rocks are dark bituminous slates with blue or grey lime- 

 stones and cherty sandstones. Stems of Crinoids, several species 

 of graptolites, related to the Victorian Lower Silurian forms, and 

 one species of coral have been recorded by Sir James, J 



Folding. — The Lower Silurian strata of Tasmania are strongly 

 folded. One very strongly developed anticline, described by 

 Johnston, trends from Elliott Range in the south-west portion 



* Catalogue and Guide, &c., to New Zealand, loc. cit. pp. 81-82. 

 t Loc. cit. Q. J.G.S. Vol. xli. p. 199. 

 J Loc. cit. p. 82. 

 39 



