414 KALPH TATE. 
broader at their superior extremity than the rest. All are granular 
and much lobed. They are connected with the septa and usually 
also with the columella by thin, short, and deeply sunken. processes. 
At the extremity of the pali described, and united to them by these 
processes, a few smaller and more central ones are, I think, separ- 
able from the outer papilli of the columella. The calice is slightly 
elliptical and regularly concave with a tolerably deep fossa. Owing 
to the stoutness of the septa and pali, as well as to the prominent 
papilli of the columella, the calice has a crowded appearance. 
Height of corallum 21, length of calice 8, breadth of calice 74 
millimetres. 
Locality :—Very rare in the Eocene beds at Red Bluff, Shelford. 
Collected by Mr. Swan, to whom I am indebted for the well pre 
served example figured. 
This coral is wholly unlike any species hitherto described from 
the Australian Tertiary, but from a comparison of actual examples 
I conclude that, though much larger, it is nearly allied to P. 
Turonensis of the French Miocene. 
Some corals lately collected by Professor Tate and myself at 
Table Cape, Tasmania, though differing slightly in the shape of 
the corallum, agree with the present species in calicular arrang® 
ment. ‘There are two varieties from that bed, each of which may 
represent a distinct species of the genus. It is proposed to 
describe them shortly. 
Family AsTRAEIDa. 
Genus Montlivaltia. 
MONTLIVALTIA VARIFORMIS, spec. nov. (Plate 20, figs. 1 4, b.) 
Corallum simple and variable in outline from flatly convex t? 
roundly conical ; the figured specimen is an intermediate form. 
There is usually a more or less slight constriction towards the 
middle of the corallum, but in some examples this becomes so PP 
nounced as to form a neck eee its upper and lower portions. 
The base also varies from broad p g to small land rounded, 
