16 A MONOGRAPH OF THE TERTIARY POLYZOA OF VICTORIA. 



M.C. 



I have only a single zooecium, the posterior surface of which is broken but was 

 convex. The posterior aspect of the sub-fenestral plates is seen through the 

 fracture to be closely applied to the anterior wall, there being no cavity or chamber 

 between them. 



23. C. intermedia, McG. PL II., fig. 1. 



C. intermedia, McGK, P.Z.V., 24. 



Zooecia rather broad; 5 pyriform fenestras separated by thick margins, the 

 apices nearly meeting; a central internal plate extending to the middle of the 

 fenestras ; thyrostome large, slightly contracted at the sides, straight below ; one or 

 two external depressions looking outwards and forwards. Posterior surface smooth. 



B. ; M. A recent Australian species. 



24. C. lunipora, n.sp. PL II., 2. 



Zooecia vase-shaped, narrow ; 5 large, somewhat lunate fenestras ; lateral 

 processes small, erect ; thyrostome straight below, slightly contracted at the sides ; 

 a narrow band extending vertically upwards from the peristome. Posterior surface 

 depressed down the centre, two hollow spaces on each side opening outwards and 

 backwards. 



B. 



25. C. ovoidea, n.sp. PL II., figs. 3, 4. 



Zooecia large, ovate ; 7 large, pyriform fenestras ; lateral processes large ; an 

 internal calcareous plate extending to about half the length of the fenestras ; 

 thyrostome large, lofty, arched above, with the lower margin slightly convex ; 

 peristome thickened above. Posterior surface smooth. 



M.O.; B.; M. 



26. ? C. punctata, n.sp. PL II., fig. 30. 



Zooecia ovate ; an irregular series of small depressions or pores, double at the 

 lower part, along the margin, and a few others in a depressed space below the 

 thyrostome ; thyrostome subcircular, straighter below ; a nearly conical lateral 

 process on one side (probably worn off on the other), surmounted by a minute 

 avicularium. Dorsal surface smooth. 



I am in great doubt where this species ought to go, and have provisionally 

 placed it in Catenicella, as it seems to be one of the Catenicellidas. 



Stenostomaria, n.g. 

 Zooecia broad ; an elevated band or ridge down the centre ; thyrostome rounded 

 above, and Avith a narrow acutely pointed sinus in the lower margin, contracted at 

 the base by a denticle on each side formed by an extension of the peristome, so 



