A MONOGRAPn OP THE TERTIARY I'OLYZOA OP VICTORIA. 141 



ramily Lichenopokid^. 



" Zoariiuu discoid, simple or conflueut ; adiiate or substipitatu, ink-rzowcial . \nS''*^ ' '^•'^. 

 spaces caucellate (cauccUi sometimes obsolete). Zoceeia erect or suberect, disposed! *• , ' ' ^y. 

 more or less reyularly in series diverging from au opeu central area."^ — (Jiusk). "^--'-'. -'^ 



Liclienopora, Lamx. 



" Zoarium adnate or partially free, frequently discoid or cupped, usually 

 growing on a basal lamina, with a thin external margin. Zooecia partially free, 

 disposed irregularly or in radiating series, with the intermediate surface cancellated ; 

 peristome usually lacerated or pointed to one side." — (McGr.). 



1. L. liispkla, Fleming, sp. PI. XXI., tig. 3. 



Liclienopora hlspkla, Waters, Q.J.G.S., XL., p. (391; Busk, C.P., Pt. II., 2G; 

 Discoporella Iilspkla, Busk, B.M.C., III., 30. 



" Zoarium subcircular, convex, Avith or Avithout a narrow marginal lamina ; 

 surface ixniformly covered Avith circular openings level Avitli the surface, of tolerably 

 uniform size ; towards the border some of the orilices raised, subtubular and bi- or 

 tridentieulate, disposed in obsciu-e irregular series." — (Busk). 



M.C. ; B. (W.) ; W.P. ("W.) Miocene to recent, Europe; recent Southern 

 Australia, Britain, Greenland, Labrador. 



2. L. radiata, Audouin, sp. PI. XXI., figs. 1-, 5. 



Unicacea radiata, D'Orb., P.P.T.C., p. 971 ; JDiscopoi-eUa Jlosculas, Hincks, 

 A.M.N.H., 3rd Ser., IX., 168 ; Busk, B.M.C., III., 32 ; Titbidlpora patina, Milne 

 Edwards; Liclienopora radiata, Waters, Q.J.G.S., XL., p. 691; McG., C.V., 33. 



" Zoarium orbicular, convex. Math the centre flat or depressed ; cancelli small 

 and sparse, not stellate, cells connate, disposed in much-raised uniserial rays 

 alternately long and short ; mouths obscurely mucronate. A single row of circular 

 pores between the rows of cells." — (Busk). 



M.C; S.P. ; C.C. (W.); B. (W.) ; Mt. Gambler (VV.) ; Napier, X.Z. (W.) ; 

 Phocene Sicily. Living. Evu-oijean and Australian seas. 



3. L. echinata, McG. PI. XXL, fig. 8. 



Discoporella echinata, McG., T.R.S.V., XX., 1883, p. 127. 



" Zoarium discoid, on an expanded lamina, convex. Zooscia irregularly 

 radiating, distinct, apertures opening obliquely outwards ; proximal edge of peri- 



