138 Cc. A. SUSSMILCH. 
there occurs a series of conglomerates, sandstones, and 
shales, containing Spirifer disjuncta, Rhynconella pleu- 
rodon, and Lepidodendron australe, described by Prof. 
T. W. EH. David,’ who refers them to the Upper Devonian 
or Carboniferous Period. Mr. H. C. Andrews, B.A.,’ has 
described a series of Upper Devonian quartzites, slates, 
conglomerates, etc. with associated volcanic rocks con- 
taining Lepidodendron from Yalwal, N.S.W. A somewhat 
different occurrence is that near Tamworth, described by 
Prof. T. W. EK. David and EK. F. Pittman.’ These beds have 
a thickness of over 9,000 feet, and consist of claystones, 
radiolarian cherts, tufis, radiolarian limestones and coralline 
limestones. Lepidodendron australe is abundant in the 
tufis and claystones, while the coral limestones contain 
Diphyphyllum, Alveolites, Heliolites, Favosites, Syringo- 
pora, Cystiphyllum, etc.; these corals are referred by Mr. 
R. Etheridge to the Middle Devonian epoch. Lastly we 
have in the Yass District, the Murrumbidgee beds consist- 
ing of a thick series of claystones and limestones, and con- 
taining abundant fossils, including Spirifer Yassense, 
Chonetes Culleni, Diphyphyllum gemmiforme, Syringopora, 
Favosites, OCyathophyllum, Cystiphyllum australicum, 
Receptaculites australis, Stromatopora, etc.* These beds 
are generally referred to the Middle Devonian epoch. 
It will be seen that both in their lithological characters 
and in their contained fossils, the Devonian strata described 
in this paper, closely resemble the Mount Lambie and the 
«Contribution to the Study of Volcanic Action in Eastern Australia,” 
by T. W. E. David, B.4., F.g.s. Proc. Austr. Adv. Sci., 1893. 
* Report of the Yalwal Goldfield, by E. C. Andrews, BA., Mineral 
Resources, No. 9, Dept. Mines and Agric., Geol. Sur., N.S.W. 
>On the Paleozoic Radiolarian Rocks of N.S. Wales,” by Prof. T. 
W. E. David, B.a., F.c.s., and E. F. Pittman, a-.Rs.m. Quart. Journ, 
Geol. Soc. London, Vol. tv., 1899. 
* « On the occurrence of a bed of fossiliferous tuff and lavas between 
the Silurian and Middle Devonian at Cavan, Yass,” by A. J. Shearsby. 
Proc. Linn. Soc. N.S,W., Vol. xxx., part 2. 
