A MONOGRAPH OF THE TERTIARY POLYZOA OP VICTORIA. 141 



Eamily Lichenoporid^e. 



" Zoarium discoid, simple or confluent ; adnate or substipitate, interzooecial 

 spaces eancellate (cancelli sometimes obsolete). Zooecia erect or suberect, disposed 

 more or less regularly iu series diverging from an open central area." — (Busk). 



Lichenopora, Lamx. 



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

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

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

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



1. L. hispida, Fleming, sp. PL XXI., fig. 3. 



Lichenopora hispida, Waters, Q.J.G.S., XL., p. 694; Busk, C.P., Pt. II., 26; 

 Discoporella hispida, Busk, B.M.O., III., 30. 



" Zoarium subcircular, convex, with or without a narrow marginal lamina ; 

 surface uniformly covered with circular openings level with the surface, of tolerably 

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

 tridenticulate, disposed in obscure 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. PL XXI., figs. 4, 5. 



Unicavea radiata, D'Orb., P.E.T.C, p. 971 ; Discoporella flosculus, Hincks, 

 A.M.N.H., 3rd Ser., IX., 468 ; Busk, B.M.C., III., 32 ; Tubulipora patina, Milne 

 Edwards ; Lichenopora radiata, Waters, Q.J.G-.S., XL., p. 694 ; McG., C.V., 33. 



" Zoarium orbicular, convex, with 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. Gambier (W.) ; Napier, N.Z. (W.) ; 

 Pliocene Sicily. Living. European and Australian seas. 



3. L. ecUnata, McG. PL XXI., fig. 8. 



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



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

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



