II.-DESCRIPTION OF THE GENERA AND SPECIES. 
Sub-ldngdom — C(ELENTEliATA. 
(7/«5s— ACTINOZOA. 
Obs . — One of the most remarkable features in connection with the 
Permo-Carhoniferons Paima of New Sontli Wales is the great numerical and 
specific development attained by certain groups of animal life, to the marked, 
although not total exclusion of others. In no class is this more apparent 
than the present. In extra- Australian areas, more particularly Europe, side 
by side with a teeming Molluscan life, a moderately prevalent Crustacean, 
and a vigorous development of Echinodermata, we find the remains of an 
equally prevalent Coral fauna during the Carboniferous. 
On the other hand, during an equivalent period in New South Wales, 
and indeed throughout Australia generally, the Actinozoa dwindled to a com- 
paratively insignificant factor. That this was not the case in PrcB-Carbon- 
iferous times is quite apjiarent, as a glance at the rich Coral fauna of the 
Silurian and Siluro-Devonian rocks of this Province Avill sIioav. 
Should future researches support this view, we can only adopt the 
conclusion that coral life at this particular period, in what is noAV New South 
Wales, was gradually dwindling, as it also did during the closing epoch of the 
Pala 30 zoic Period in other quarters of the globe. 
The remains of corals, even when recorded, have been but indifferently 
preserved and scanty in numbers. This seems to hold good in all cases, 
except those of the genera Stenopora, representing the MonticuliporidoB, and 
