PERMO-CARBONIFEROUS FENESTELLIDA. 189 
parts of the colony of this layer, and similar rhomboidal 
cells. Ihave no doubt they are congeneric, but P. montuosa 
differs inasmuch as there are only 3 or possibly 4 cells in 
the length of a fenestrule and 7 to 10 rows upon a branch, 
whereas in P. Koninckiana, there are 6 or 7 cells in the 
first case and only 5 to 7 transversely. With Polypora 
transiens Waagen and Pichl,* it also has affinity, but differs 
in the larger size of the cells, and the fewer number longi- 
tudinally. The Phyllopora like bending of the branches is 
very noticeable in P. transiens. 
From the only described species of Australian Proto- 
retepora, P.ampla Lonsdale, which is figured for comparison, 
it differs by the much greater number of rows of cells (7 to 
10) as against 3 to 4 transversely upon a branch. Perfect 
material of P. ampla has yet to be described and figured. 
PROTORETEPORA AMPLA Lonsdale.? (PI. IV.) 
Specimens of this species, particularly from this locality, 
are seldom well enough preserved to identify with certainty, 
accordingly it is here figured and definitely recorded. This 
specimen shows well the nature of the colony; the non- 
celluliferous layer has entirely disappeared, and there is 
visible the cast of the base of the celluliferous layer, with 
the rhomboidal cells packed closely together, the walls of 
which, having decomposed, are represented by deep furrows. 
Again in this case no cells are actually visible upon the 
dissepiments. 
Locality and Horizon:—Bundanoon (Upper Marine 
series). 
Geuus POLYPORA McCoy. 
The differences between this genus and Protoretepora 
have already been discussed under the heading of the latter 
genus. 
‘ Waagen and Pichl, (8) pl. 91, figs. 3, 4, 5. 
* Fenestella ampla Lonsdale (1) p. 180. 
