AUSTRALIAN TERTIARY FORMATIONS. LIZ 
mihi. Of these, Fissurella concatenata, Natica polita, Cylichna 
arachis, Liotia discoidea, LL. lamellosa, and Syrnola bifasciata, 
ti are found living on vy e east coast ior Australia, and 
t they are not 
Beicheri at immense Stes! off the Cane of Go od ope, ectun- 
culus laticostatus in New Zealand, but both the latter are found 
in St. Vineent’s Gulf and N. Tastnsmnia: We see thus that the 
was not described from a fossil. I have never seen a living 
specimen 
On the whole then, the living species are not eight per cent. 
of the actual number described. We have about 120 described 
mollusea (including Brachipoda), nearly thirty Echinoderms, 
about forty Corals, and say twenty Polyzoa. But of the sethere 
are not twelve in existence. This according to European 
oe would place our eomerees and Muddy Creek beds on 
Pp Ww. 
occurs in the Miocene of Europe, Conotrochus M‘Coyi in the ae 
Pliocene of Sicily, and Balanophyllia = Mickelotio, i in the 
iocene of Tortonia. Few of our urchins und among the 
fossils of other formations besides those which still e exist, as I ‘sha 
show furtheron. Echinarachnius parma was found by 
ina Tertiary deposit at Patagonia, a age has not bees ate. 
mined, Among the mollusca there is scarcely any identity or at 
least no hae a satisfactory identity with extinet species in ot 
deposits.* ‘At first sight many of our fossils have been referr ed 
to forms found in Tertiary deposits of Europe and America, but 
* Limopsis aurita, Sassi, is not uncommon in our lowest beds. L. insolita, 
Sip tad Masons tes aneundina' $6 — 
. 
