A MONOGRAPH OF TUE 'J'ERTIAllY POLYZOA OF VICTORIA. 139 



" Zoarium adnatc, with a distinct lamina, partly free at the edges. Cells 

 arranged in distinct, elevated, radiating ridges, very much enlarged and prominent 

 at the extremities ; the narrow parts very prominent, transversely Avrinkled, and 

 showing the mouths of a few closed cells, the extremities forming bundles of closely- 

 packed cells, mostly oi)ening terminally. Tlie surl'ace between the ridges punctate 

 and transversely rugose." — (McG.). 



M.C. ; M. Living. Victoria. 



3. L. superposita, McG. PI. XXII., fig. 6. 



Zoarium thick, discoid. Zooecia opening along raised ridges. A single series 

 in (»acli ridge towards the ceutre, increasing to two or three towards the periphery. 

 Kadial furrows between the ridges floored by a finely-punctate, coarsely-transversely 

 rugose, calcareous lamina. 



B. 



Differs from L. llncala in having the transverse lines or Avrinkles in the 

 furrows much coarser, and approacliing L. fusciculata in this respect. The flooring 

 lamina is lu'oken away for some distance in one place, and shows that it was 

 produced at successive intervals of growth, as another similar lamina is seen at the 

 base of the large cavity thus displayed. As the specimen is rather worn the 

 projecting part of the basal lamina is not shown. 



Entalophora, Lamx. 



"Zoarium erect, branched; branches cylindrical or clavate, with tubular zoo3cia 

 opening all round." — (McG.). 



1. E. aiistratis, Eusk. PI. XX., figs. 10, 11. 



Pi(sii(lopom anstralis, Busk, B.M.C., III., 21; id., "Voyage of the Rattle- 

 snake," I., 350 ; Entalophora australls, McG., C.V., 32 



"Zoarium branched dichotomously; branches short, inerassated, truncate; cells 

 almost entirely immersed or about half free; surface minutely i)apillose, siunmits of 

 papillae of a dark brown or black colour. With age the walls become much 

 thickened and porcellanous, with transverse rugye." — (Busk). 



M.C. Living. Australia. 



2. E. verticillata, Goldf. PI. XX., figs. 12, 13. 

 Ceriopora verticillata, Goldf., Petrefacta Germani;e, I., 3(J; Spiropora antiqaa, 



T2 



