9 
and a vertebra of a Plesiosaiwns. These fossils will he found referred to in 
their proper places, hut the two new species are no doubt good and distinct, 
and an addition to our fauna. 
On the strength of these and a most imperfect and elementary know- 
ledge of Australian Mesozoic Geology and its bibliography, the author pedan- 
tically propounds his views of the AVhite Cliffs opalised fossils. He considers 
them to he quite younger Jurassic, possibly either Dogger or Malm, whilst 
our Cretaceous formation at large is supposed to represent a series of deposits 
extending from the Upper Dogger to the Upper Chalk.^ 
* Neues .Jahrb. f. Mineralogie, kc., 1901, P.eil. Bd. XIV, p. 4S4. 
B 
