12 
Sedimentary Formations 
Mr. Gould mentioned, in June, 1860, a Calymene at tlie base 
of the Eldon Eange. I found that genus also in New South 
Wales in 1852. In Victoria Professor M‘Coy has made a list of 
twenty-five Lower and fifty-three Upper Silurian fossils, inclu¬ 
ding in the former twenty-three Hydroid Zoophytes, and another 
species belonging to the Upper formation. Of the Graptolitid# 
only one is said to have been found in this Colony, and I presume 
that it is more likely to belong to the Upper Silurian than to the 
Lower, though towards the Victorian boundary, along the Deleget 
-River, Lower Silurian rocks, according to some, are supposed to 
make their appearance. 
Now South Wales offers a more determined evidence of the 
existence of certain Silurian deposits, but singularly enough 
nothing has been positively shown of the existence of any fossils 
below the base of the Llandovery or the Middle Silurian, except 
in the case just mentioned. 
To this epoch I referred fossils found by me in Maneero, in my 
Keport of November, 1851, which was re-published in I860 ; and 
it is satisfactory to find that the examination of a considerable 
amount of specimens by Prof, de Koninek of Liege, who kindly 
undertook the task of describing them, has resulted in a confir¬ 
mation of my opinion. {Sea Appendix XIV.) 
Summing up his review of sixty of these, he says—that they are 
in nearly equal divisions of the upper and lower beds of. the 
Upper Silurian formation, and that they closely agree with the 
fossils of Europe and America; that the major portion of the 
former belongs to the Actinozarians and Crustaceans, and that 
the latter are nearly all Mollusea ; and that none of the Grap- 
tolites noticed by Prof. M‘Coy in 1861, and more recently by 
Mr. J i. Etheridge, junr., from the Victorian strata, occur in the 
collection sent by me. And he concludes, as I have done, that 
at present the existence of fossil beds below the Middle Silurian 
has not yet been determined in Now South Wales. 
It is otherwise in Victoria, but it may be that some of the 
highly transmuted rocks of the south-west portion of New South 
Wales may yet furnish traces of greater antiquity when 
thoroughly examined. In the last Edition of this memoir, pub¬ 
lished in 1870, I mentioned the existence of certain Corals, Trilo- 
bites, &c., as determined forme in 1858 by the late Messrs. Salter 
and Lonsdale. {See Appendix XVII.) 
The Mudstones of Yarralumla, with Encrinurus and Calymene; 
the Coralline and Pcntamerus beds of Deleget and Colalamine ; 
the Tentaculite and Haly sites beds of Wellington and Cavan; 
and the Silverdale and Downing beds with Calymene, Encrinurus, 
Beyricliia; and others with Ilhenus, Jlarpes, Bronte us; Braehio- 
poda, including Strophodonta;andltadiata, embracing Star-fishes— 
point to the existence of at least the Upper Silurian formation on 
