60 
Journal of the 
Note.—I find that Tuckett advises the use of a cover larger 
than the cell, in order to prevent running-in ; but as he does not 
withdraw the fluid from the space round the cell, his method gains 
no advantage over the ordinary plan in security from leakage. 
Fossil Catenicellce , from the Miocene Beds at Bird Rock , near 
Geelong. By J. Bracebridge Wilson, M.A. 
[Read 25th September, 1879.] 
I desire to call attention to certain peculiarly interesting forms, 
which I have been so fortunate as to discover in the Miocene 
Tertiary rocks of the Spring Creek section, fifteen miles south of 
Geelong. To show the value of the discovery, it is necessary first 
to state that this deposit is regarded as belonging to the same 
geological horizon as the beds at Mount Gambier and at Muddy 
Creek, near Hamilton. 
From the remarks made by the Rev. J. E. Tenison-Woods, 
one of our greatest authorities on fossil Polyzoa, it will be 
gathered that the occurrence of Catenicellce in our Miocene 
deposits is of no little interest, and some scientific importance. 
He says in the “ Quarterly Journal of the Geological Society,” 
vol. xxi. p. 393 : — “ The Bryozoa of the Hamilton beds, and of 
Mount Gambier, resemble each other in the absence of those 
forms, such as Caienicellida:, Menipea , Dimeiopia y <fcc., which 
give to the recent genera of the Australian seas so peculiar a 
character. It would appear from this that Catenicellida are 
peculiar to the recent period.” The value of the discovery of 
fossil Catenicellidce will further appear from the statement of 
Busk respecting the geuus Catenicellidce , which he regards as a 
characteristic of Australian seas. “ For although,” he says, “ it 
occurs elsewhere in the southern hemisphere, it does so but rarely, 
and is almost unknown in the northern hemisphere.” 
It is interesting therefore to find, that when our Miocene beds 
were being deposited at the bottom of a deep and tranquil sea, 
the Polyzoic Fauna presented precisely the same peculiar 
facies as at the present day. 
At least twenty distinct species of Catenicellce have already 
