A MONOGRAPH OF THE TERTIARY POLTZOA OF VICTORIA. 19 



thyrostome subcircular, the lower margin straight and probably with a slight 

 sinus, a minute denticle on each side; lateral processes thin and rather narrow. 

 Posterior surface convex and smooth. 



S.P.; M.O. 



The Schnapper Point specimens are larger and the vittse wider than in those 

 from Muddy Creek; and I am not sure that they ought not to be referred to 

 distinct species. 



2. C. speciosa, n.sp. PL II., fig. 15. 



Zooecia elongated, narrow ; an entirely lateral, rather wide vitta, with two rows 

 of pores, extending the whole length of the zooeciuin on each side ; thyrostome lofty, 

 rather narrow, arched and somewhat pointed above, contracted towards the straight 

 lower margin. Posterior surface smooth. 



S.P. 



I have only the single geminate pair of zooecia figured. It is allied to C. fusca 

 (McG.), from which it differs in the wider vittae and the thyrostome being much 

 narrower aud pointed above. The zooecia, moreover, are straight, and not curved as 

 in the recent species. The lateral processes are not very perfect. They, however, 

 seem to have been rather small with an avicularium opening outwards. 



3. C. hannafordi, McG. PI. II., figs. 16, 17. 



Catenicella hannafordi, McG., P.Z.V., 24. 



Zooecia broad, ovate or pyriform ; vittse lateral, wider below ; thyrostome 

 rounded above, hollowed below, with a minute denticle on either side; a long 

 narrow depressed mark or slit on each side of the thyrostome extending upwards 

 and outwards on the large lateral processes. Posterior surface smooth. 



M.C. Recent Australian. 



I refer this species somewhat doubtfully to the recent C. hannafordi, with which 

 the resemblance is only seen after calcination. In the fossils the lateral oral mark 

 is larger than in recent specimens and the vittse do not extend so high up. 



4 C. teres, n.sp. PI. II., figs. 18, 19. 



Zooecia small, elongated, nearly cylindrical, smooth ; vittse very narrow, linear, 

 extending the whole length of the zooecia ; thyrostome rounded ; lateral processes 

 small, supporting minute avicularia. Zooecia of geminate pairs very distinctly 

 separated behind. 



M.C. 



D2 



