and Paleontology of Victoria. 193 
of Germany, France, and England. No species of Aturia lives 
now, the angulated septa contrasting strongly with the waved 
ones of recent Nautilus. 
The Gasteropoda are very abundant and for the most part 
peculiar, several of them being closely representative types of 
well-known Miocene and Eocene European species, while others 
are identical with European and North-American Miocene and 
Upper Eocene species. Of these, one of the most striking is a 
Dentalium found in extraordinary abundance in nearly every 
locality of our Victorian Miocene Tertiaries ; and yet no species 
of the genus has ever been found living in the Victorian seas. 
The fossil species is manifestly identical with the Belgian Mio- 
cene Tertiary D. Kickxii ; and the Victorian examples also agree 
completely, on the most minute comparison, with specimens I 
have from the Lower Miocene and Oligocene beds of Flonheim, 
as well as with North-American specimens I have from the 
Upper Eocene beds of Vicksburg, described by Conrad under 
the name D. mississippiense, without observing its identity with 
the European Miocene species. This Dentalium, occurring toge- 
ther with the above-named extinct species of fish so abundantly 
in Australia, as in the United States, France, and Germany, 
is a very curious additional instance of the general identity in 
facies of the marine zoology of Australia with that of Europe 
and Northern America during the Miocene period, when all 
of these localities seem to have had a warmer climate than at 
present. Amongst the representative types the most extra- 
ordinary case is that of an entire series of Volutes in the Oligo- 
cene clay-beds near Mount Martha and Mount Eliza on one 
side of Hobson’s Bay, and the sandy beds of slightly younger 
age on the other side of the bay south of Geelong, representing 
in the most complete manner the series of common species of 
Volutilites of the Upper Eocene or Oligocene beds of the Isle 
of Wight, the Hampshire coast, and the corresponding French, 
Austrian, and Belgian strata of the basins of Paris, Vienna, and 
Limbourg. In fact the V. suturalis and V. cingulata (varieties 
of our species) of the “Tongrien” or Lower Miocene beds of 
Lattorf, near Bernberg, is so exactly represented by a species 
which I have called Voluta anticingulata (M‘Coy), that, on 
comparison of specimens with the tip of the spire absent, it 
would be almost impossible to separate them as the most trifling 
varieties; yet the European V. cingulata has the acute regular 
apex of the spire characteristic of the Eocene genus Volutilites, 
while our Australian representative form has the obtuse mam- 
millated tip of the more recent true genus Voluta. In the same 
Lower Miocene or Oligocene on~both sides of Hobson’s Bay, 
we have great numbers of another species, the Voluta anti- 
