New South Wales . 
i7 
geological district as that now discussed. M. De Tvoninck also 
notices, in addition to JViso, the occurrence of MUchellia in the 
midst of Marine shells, ns another striking anomaly in the Devo- 
nia n fauna, compared with that of Europe, concluding in these 
words,—“ Ellc n’est certes pas suffisante pour empeeher de con- 
siderer l’niio et Pautre comine contemporaines et produitcs dans 
des circo 11 stances sin on tout a fait iaentiqucs, au moins treer- 
analogucs.” (p. 135). 
It will be seen on perusing the lists of Devonian fossils, that 
De Koninck includes those 1 referred to in the second Edition 
(1870) of this memoir, from Yass, Mount Lambie, and Moruya 
Elver, and which are in part identical with the Mount Wyatt 
shells in Queensland. 
These latter are mostly Eraehiopods, and I have collected theln 
during my different journeys of several years from the western 
boundary of the Carboniferous formation (underlying it in situ), 
and occasionally from a scattered over-lying drift, ranging for 
nearly 20*0 miles of direct distance (included between 3G° south 
on the Moruya, to nearly 02° south). The principal of these 
particular Eraehiopods are — Rhynconella pleurodon , R.puf/nu. v, 
Spirifer disjunotus, S. Yaasensis, Orth idee. Productce, Sfc. They 
occur in situ between the slaty rocks of Sofala and the overlying 
Carboniferous beds on the Huron ; south of Moruya River ; near 
Mullamuddy 011 the Cudgegong River; at Cudgegong Creek ; in 
the deep defiles of the Upper Colo River; at Brueedale and 
Bathurst; and in other places. Mr. C. S. AVilkiuson, with 
whom I visited the locality in 1875, found them under interesting 
circumstances occurring in a great synclinal curve, from nearly 
the summits of Mount Lambie and Mount Walker (with con¬ 
siderable dips), and explaining the sources from which the loose 
pebbles collected by me at Eowenfells some years since were 
probably derived. From the occurrence of different fossils in 
the pebbles, it is certain that many strata of the Devonian for¬ 
mation must have been broken up, and it seems that similar beds 
have undergone the same process in other countries, for I well 
remember picking up in 1820, in the “ Plata” of Coblentz. on 
the Rhine, a similar drift pebble, of just sueli rock as that in 
question, containing a Eracliiopod of like age. 
During some recent explorations in the north-west of this 
Colony, I became satisfied as to the widely-spread extent of the 
Devonian series, of which more evidence will be elicited here¬ 
after, the data for which are already sufficient, but there is 110 
room to introduce them on this occasion. 
I may however mention now, that amongst the specimens 
collected by me in the neighbourhood of Yass in 187G, I find a 
portion of an Ichthyodorulite, which I believe to be Devonian, 
