A MONOGRAPH OF THE TERTIARY POLTZOA OF VICTORIA. 87 



A very distinct and. beautiful species. I have only the fragment figured, and 

 from the appearance of the broken zooecia on its edges, it is probable that they are 

 not all so widely expanded. 



23. S foveata, n.sp. PL XI., fig. 26. 



Zooecia indistinct, sides very much raised and tumid ; thyrostome at the bottom 

 of a depression, lofty, arched above, lower lip straight, with a distinct, rather narrow, 

 rounded sinus. 



B. 



I have only seen a single small specimen of a mamilliform shape and probably 

 forming the extremity of a branch. 



24. S. granulata, n.sp. PI. XI., fig. 27. 



Zoarium thick, encrusting. Zooecia large, ovate, distinct, granular, deeply 

 areolated round the margins ; thyrostome large, semicircular or somewhat squared 

 above, lower edge straight, with a distinct sinus contracted at the entrance ; peri- 

 stome thickened with a peristomial or subperistomial process, frequently squared, 

 immediately below the sinus ; frequently an avicularium on one side in the situation 

 of an areola, with the triangular mandible directed outwards. Oceeia considerably 

 immersed, granular. 



S.P. 



Gemellipora, Smitt. 



Zoarium crustaceous or erect and ramose. Thyrostome subcircular or pyriform, 

 with a sharp denticle on each side below, projecting inwards, and contracting the 

 entrance of a deep rounded sinus. 



1. G. elegantissima, n.sp. PL XI., fig. 28. 



Zoarium encrusting or erect, cylindrical and branched. Zooecia ovate, distinct, 

 separated by narrow raised lines, surface closely and finely granular ; thyrostome 

 small, subcircular, with a rounded sinus below, contracted at its entrance by a sharp 

 angle or denticle on each side ; a small raised avicularium to one side of the 

 thyrostome. 



M.O. 



This may be the Schizoporella ecccubans of Waters (Q.J.Gr.S., 1881, p. 341.) 



2. G. polita, n.sp. PL XI., fig. 29. 



Zoarium encrusting. Zooecia indistinct, irregularly arranged, polished and 

 shining ; thyrostome pyriform, with a small rounded sinus opening by a narrow neck 



