60 
DESCRIPTIONS OF UPPER SILURIAN 
FOSSILS FROM 
T11E LILY DALE LIMESTONE, UPPER YARRA DISTRICT, 
VICTORIA. 
15 y R. Etheridge., Junk. 
( Palaeontologist to the Australian Museum, and Geological 
Survey of New South Wales.) 
The fossils about to be described were collected at the Cave-liill 
Quarries, Lilydale, Upper Yarra District, near Melbourne, 
Victoria, by Mr. A. J North, of the Australian Museum.* 
I am informed by Mr. R. A. E. Murray, Government 
Geologist oi Victoria, that no description of this limestone has 
been published, and that beyond the fact that it is a member 
of the Upper Silurian of that Colony, little is known of it. I 
hope to be able to show, by the determination of the following 
fossils, that the Lilydale Limestone is a portion of the Upper 
Silurian, known as the Wenlock Series. 
The limestone, judging simply from the specimens which 
have passed through my hands, varies in colour from light 
grey to dark bluish-grey, and is highly fossiliferous. In places 
it is crystalline and homogenous, with scattered rather flesh 
coloured patches ; in parts minutely brecciated, with here 
and there patches of a more or less oolitic character ; in 
fact no two specimens exactly agree with one another in 
appearance and mechanical composition. It weathers and 
decomposes to an almost pure white colour and becomes very 
friable. The fossils so far recognised are at least three forms 
of Stromatoporidea ; a peculiar Favosit&s, to be described under 
the name of F. yrandipora ; and three species of Gasteropoda. 
The Stromatoporidea will require a more prolonged study 
than I am able to give them at the present moment, and 
must be relegated to a future report. Resides the univalves 
described, there is a BelleropJion, but not sufficiently well 
preserved to be determinable. Lastly a Rugose coral, which 
will probably prove to be one of the Cyathophyllidae. 
* Supplemented by a small series presented by Mr. J. Campbell, of the 
Lilydale Quarries. 
