A MONOGRAPH OF THE TERTIARY POLTZOA OF VICTORIA. 143 



6. L. reticulata, McG. PL XXI., fig. 7. 



Discoporella reticulata, McG., T.R.S.V., XX., 1883, p. 126. 



" Zoai-iiim orbicular, bordered, convex ; cells connate, radiatinfj in iiniserial 

 rows of irreg-ular lengtbs ; peristome with the outer border in-oduced, pointed, and 

 entire ; centre of zoarium occupied by large shallow caneelli, separated by narrow 

 raised walls ; a single or double row of smaller rounded caneelli between the rows 

 of cells. . . . The most distinctive character is the number and larije size of 

 the shallow caneelli in the centre of the zoarium. There are no spines to be seen 

 in the interior of any of the cells or caneelli." — (McG.). 



The fossil shows blunt spines in the zooecial tubes and caneelli as shown in the 

 figure, and the walls of the large caneelli are pierced by rounded pores. 



7. L. austraJis, McG. PI. XXI., fig. 6. 



Zoarium a short blunt cone, depressed at the apex ; base flat. Zocecia 

 arranged in regular radiating lines usually in a single series, walls confluent, 

 apertui-es rounded, produced on the side nearest the centre into one or more blunt 

 teeth ; occasionally crossed by thin tabulre at or near the orifice ; walls granular 

 .Avitli one or more longitudinal flutings on the side facing the centre. Caneelli 

 rounded ; two or three irregular rows between the radial ridges. Ocecium formed 

 by an inflated, thin, punctate, calcareous plate in the centre of the colony and 

 sending prolongations between the rays. A single row of caneelli between each 

 prolongation and the zocecial row on each side of it. 



M.C. 



8. L. rritjraria, McG. PL XXI., fig. 12. 



Zoariiim discoid, depressed, apex concave. Zoo^cia in radiating curved rows, 

 sometimes bifurcating near the margin. Surface between the rows covered with a 

 thin uneven calcareous plate extending to the margin and pierced by numerous 

 small circular pores ; a similar plate closing the caneelli slightly below their 

 apertures ; caneelli visible only near the centre of the colony. 



M.C. 



Heteropora, Blaiiw. 



" Zoarium encrusting in a thick layer, or forming thick erect cylindrical 

 branches. Zofficia long, tubular, quite immersed, opening by rounded or angular 

 orifices on the surface. Between the apertures of the zooecia the orifices of numerous 

 other small pores or caneelli." — (McG. ms.). 



