107 
SUCCESSION iTABLE OF PRE-MIOCENE TERTIARY BEDS. 
Post Eocene (? Oligocene). 
Beaumaris (Cheltenham), Murray Desert, Table Cape, and 
Spring Creek. 
Upper Eocene. 
Muddy Creek, Gippsland Rivers, River Murray, around Port 
Philip, Gelibrand River, and upper part of Lower Aldingian 
Series. 
MIppLeE Eocene. 
Cape Otway and middle section of Lower Aldingian. 
Lower Eocene. 
Chalk of the Great Australian Bight, lower part of Lower 
Aldingian Series, and Croydon Bore. 
PALAONTOLOGICAL NOTES. 
Fusus trivialis, spec. nov. Plate i., fig. 4. 
This species is represented by an imperfect specimen, wanting 
the greater part of the spire. It resembles Fusus Johnstona, as 
illustrated in my ‘‘Gasteropods,” Part I., t. 12, fig. 4a (a young 
shell), and indicates a total length of 44 mm., and a width of 
body-whorl of 20 mm. It differs by fewer and stouter spiral 
threads, three or four on the antesutural slope, the whorls not so 
angulated, the peripheral tuberculations more dentiform and 
larger, and the snout much more robust. 
Volutilithes antispinosus, spec, nov. Platei., figs. 5a, b. 
It resembles the short-spired form of V. antiscalaris, but has 
not the antesutural corona, and the adjacent whorls are flush, the 
spinous tubercles are fewer (eleven on the body-whorl), and more 
prominent. Its shape is more pyriform, and by reason of the 
more precipitous post-peripheral slope and the relatively wider 
periphery the aperture is more markedly trapezoidal. The pos- 
terior half of the anteperipheral area of the body-waor! is smooth. 
In this and some other respects this new species is the analogue 
of V. spinosus, Lamarck, but it is larger and less acute. 
In my ‘“Gasteropods,” Part II., p. 134, V. anticingulatus is 
recorded from Murray Desert ; the specimen which served for 
that determination is not accessible to me, but, it 1s probable, it 
belongs to V. antispinosus. 
Dimensions.—Length, 48 mm.; width, 24 mm. 
Mitra diductua, spec. nov. 
M. dictua, Tate, Trans. Roy. Soc., 8. Aust., vol. XI., p. 138, t. 4, 
9, 1889 (non. Ten.-Woods. ) 
