16 A MONOGRAPH OF TUE TEIlTIAllY POLYZOA OF VICTORIA. 



M.C. 



I have only a ssitii^lc zooeciuin, the posterior surface of wliicli is broken hut was 

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

 fraetiire to he closely applied to the anterior wall, there heiny no cavity or chamber 

 between them. 



23. C. Intermedia, McG. PI. II., fig. 1. 



C. hi I rr media, McG., P.Z.V., 21. 



Zooecia ratlicr broad; 5 pyrit'orm fenestnc separated by thick margins, the 

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

 fencstrie ; tliyrostoiue large, slight ly contracted at the sides, straight below ; one or 

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



13. ; M. A recent Australian species. 



21. C. Initipora, n.sp. PI. IT., 2. 



Zocccia vase-shaped, narrow; o large, somewhat, lunate fenestrie ; lateral 

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

 a narrow baud extending vertically upwards from the jjcristome. Posterior surface 

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

 backwards. 



B. 



25. C. ocoidea, n.sp. PI. II., figs. 3, 4. 



Zooicia large, ovate ; 7 large, pyriforni fenestnc ; lateral processes large ; an 

 internal calcareous plate extending to al)out half the length of the I'enestroi ; 

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

 peristome thickened above. Posterior surface smooth. 



M.C; B.; M. 



20. ? C. punctata, n.sp. PI. II., ilg. 30. 



Zooccia 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 

 proc(?ss on one side (probably worn oil' on the other), surmounted by a minute 

 avicularium. Dorsal surface smooth. 



I am in great doubt Avhere this species ought to go, and have ])rovisionally 

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



Stenostomaria, n.g. 

 Zocccia broad ; an elevated band or ridge down the centre ; thyrostome ronndinl 

 above, and with a narrow acutely pointed sinus in the lower margin, contractcul at 

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



