125 
FURTHER DESCRIPTIONS OF UPPER SILURIAN 
FOSSILS FROM THE LTLYDALE LIMESTONE, UPPER 
YARRA DISTRICT, VICTORIA. 
By R. Etheridge, Junr., 
(Palaeontologist to the Australian Museum, and Palaeontologist 
and Librarian, Geological Survey of New South Wales.) 
(Plates xviii. — xix.) 
The additional fossils about to be described, are like the former 
collection,* obtained by Mr. A. J. North, from the Cave-hill 
Quarries, Lilydale, Victoria. 
When publishing the former descriptions 1 overlooked a short 
account of the Lilydale Limestone by the Rev. A. W. Cresswell,f 
who gives the following particulars regarding it. The limestone is 
about one hundred feet thick, interstratified with the Upper 
Silurian rocks of the district. It is believed to be a lenticular 
patch, the prevailing colour being cream. As regards the fossil 
contents Mr. Cress well makes the following remarks : — “ Several 
specimens of a sub-genus of Turbo, one of them being as large as 
a good sized recent Turbo undulatus. The form appears to me to 
be close to Euchelus , there being no umbilicus or the columella 
showing trace of being toothed, it is very like our common recent 
Euchelus canaliculatus , but has finer and more numerous line. 
The nearest shell to it in Murchison’s “Siluria,” appears to be 
Cyclonemcb corallii of the Upper Ludlow, with which it is perhaps 
identical. Several specimens of Murchisonia , apparently corres- 
ponding to M. corallii of the Upper Ludlow, as figured in Mur- 
chison’s “Siluria.” A Bellerophon ; and several 
specimens of the common Upper Silurian species of Favosites 
called Favosites aspe/ra , . ; a single joint of Crinoid stem, 
probably an ActinocrinusT The strike of the beds is meridional. 
I have not seen any shells which could be regarded as co-specific 
with Cyclonema corallii , or Murchisonia corallii , from the British 
Ludlow rocks. These are small species and not to be compared 
to those herein afterwards described. 
Prof. R. Tate, F.L.S., has been kind enough to supplement my 
previous descriptions by notes from specimens in his Collection, 
which will be found in their proper places. He however remarks 
of Niso ? brazieri : — “ I imperfectly observe that the aperture is 
rounded in front, and not angulated as in the Recent and Tertiary 
species of Niso.” 
* Records Australian Museum, 1890, I., pt. iii., p. 60. 
f The Queen’s Birthday Excursion to Lilydale, Victoi'ian Naturalist , 
1885, XL, No. 3, p. 35. 
A— June, 1 1891. 
