10 A MONOGKAPU OF THE TERTIARY POLYZOA OF VICTORIA. 



small distinct suboral pore ; lutoral processes pointed above. Posterior surface 

 convex. 



S.P.; M.C.; B.R and W.P. (W.) 



Mr. Waters gives no figure. His description is :— "(Tlobulus ovate, witli a row 

 of lar<'-e foramina round the margin of the zowcium, and tme pore below the aperture. 

 Aperture large, i-oundcd alinve, widest at the proximal end, which is straight. Oral 

 aperture O'OS millini. wide and 0-08 millim. long." 1 have only single zoiccia of this 

 species. 



5. C. expansa, n.sp. PI. I., figs. 8, 9. 



Zocecia broadly ovate, fenestraj 9 in single, 6 or 7 in geminate zooecia ; thyrostome 

 with the lower margin straight and a small suboi-al pore ; lateral processes very 

 broad, triangular, extending the whole length of the zoteeia and curved forwards, 

 with a small avicularium at the angle, opening outwards. Posterior surface convex, 

 finely sulcata. 



M.C. 



Allied to C. eirciimriiiclo, from which it differs in the greater width of the 

 zocecia and the laige size of the wing-like lateral processes. 



6. C. mamillata, n.sp. PI. I., figs. 10, 11. 

 Zooecia ovate; fenestra; 12-lG, round, sub-marginal, extending to each side of 

 the thyrostome ; thyrostome lofty, with the peristome projecting above, sslightly 

 wider at the inferior angles, lower margin straight and entire ; a small suboral 

 pore ; anterior surface convex and the geminate zoojcia, especially the up])er, with a 

 large mound-like elevation marked by several fine lines radiating from the suboral 

 pore ; lateral processes of moderate size. Posterior surface depressed. 



S.P.; M.C. 



Most of my specimens consist of geminate pairs of zooecia. In these the mound- 

 like striated elevation forms a marked feature ; in the single zocecia it is not nearly 

 so prominent, but the front is more convex than in C. clrcmncincla, The jjosterior 

 surface is slightly depressed. 



7. C. ieniiis, n.sp. PL I., figs. 12, 13, 14. 

 Zooecia slender, elongated, convex, usually curved with the concavity forwards ; 

 a sub-marginal row of 11-15 large, round fenestr;^ ; thyrostome lofty, straight below, 

 ami with a minute denticle above each lower angle ; ])eristome slightly elevated ; 

 lateral processes broad and pointed above, and having an avicularium opposite the 

 middle of the thyrostome. 



S.P.; MC. 



