CENSUS OF THE OLDER TERTIARY FAUNA OF AUSTRALIA. 411 
Order CycLosTomaTa. 
Filisparsa, one sp.; Stomatopora, two spp. ; Liripora, three spp.; 
Tecticavea, one sp.; Discofascigera, one sp.; Heteropora, two spp.; 
Frondipora, one sp. 
Retihornera is merged in Hornera and Pustulipora in Entalo- 
phora; Bimulticava and Carbasea are expunged. 
Class EcHINODERMATA. 
Genus Cidaris. 
Subgenus Stereocidaris, Schutte. 
Example, Cidaris Australiae, Duncan. I have compared 
Duncan’s type, which is a single interambulacral plate, with 
complete interambulacral zones of a Cidarid from Aldinga and it 
is matched with the largest of the tuberculated plates of the 
Aldinga specimens. These latter belong to Stereocidaris and 
indicate a conic test, the broad base being nearly flat, to about 
one half the total length of the arc, thence roundly bent backward 
at about 60°; the basal half consists of four plates in each row 
having areolar areas, the posterior ones of which are the largest ; 
the four or five posterior plates in each row are without areoles 
or one or two may show traces of them. 
The fossil which has been listed as a widely distributed species 
under Duncan’s name is not that species, but is an undescribed 
Goniocidaris. Stereocidaris Australie is only known to me from 
the glauconitic limestone of the Aldinga Oliffs; the type is 
reported from Cape Otway. 
Genus Echinobrissus. 
An examination of the type of E. australie, Duncan, proves it, 
as was long suspected, to belong to Cassidulus. The genus is, 
however, not to be deleted from our list, as E. Vincentinus, Tate, 
is representative. 
Scutellina is a misprint for Scutella.. 
