84 A IMONOGllAPH OF THE TERTIARY TOLYZOA OF VICTORIA. 



^^^"^ t^^^^M^'V'^^J'^^ 1 12. -S-. dcedala, McG. PI. XL, fi-. 15. ^o y 



.-. .g^s'. Svhizoiwrella dceiUla, McG., P.Z.V., 138; S. conseroata, Waters, Q..T.G.S.. 



^ />^881, p. 3d.O. '*^' -^- '^' 



^.^jjX*- ^ Zoariiim encrustinii:. Zooncia broad, distinct, margins deeply arcolatcd ; 



^6»*rft^* tliyrostomo large, ai'ched above, straiglit below, Avitli a moderate-sized sinus; 



^xA ^ 5-7 spines on llie upper margin; a large avicularium I'xtending borizonlally 



outwards on eaeli side, or oecasionally on one side only, about tbe middle of the 



zoa'cium. 



S.P. ; 1?. ; M. ; C.C. (W.) Living. Australia. 



A full description of recent S2)ecimcns will be found in P.Z.V. 



13. S. auriculata, Hassall. PI. XL, fig. IG. 



Lepralla auriculata, Unsk, B.M.C., II., p. 07 ; Scliizoporella auriculata, Hincks, 

 B.M.P., 200. 



Zoarium I)ilamiuate (in the fossils). Zoiecia distinct, arranged in linear scries 

 separated by grooves, elongatcjd, of nearly uniform width, convex, smooth ; thyro- 

 stome semicircular, the straight lower li]) with a distinct sharp sinus ; below the 

 thyrostome an elevation with a conspicuous roimd (avicularian) pore ; a triangular 

 avicularium (frequently absent), wdth long triangular mandible directed inwards, 

 close to the margin on one or both sides. Ocecia large, subimmersed. 



M.C. ; B.Il. ; M. 



In some specimens the zooecia are mon- convex tlian in that figured, and in 

 many, close to the margin, are several slit-like pores arranged longitudinally. The 

 lateral avicularia are frequently absent. The ocecia in all the .specimens shewing 

 them are largely open in front, the ojiening being bounded by a scunicircular margin, 

 which may be tlu^ growing edge, or may bound a sixice occupied by a thinner 

 material or membrane. 



14. *S^. suhsinuato, Hincks. PI. XL, fig. 17. 

 Schizoporella suhsinuala, Hincks, A.M.N. IL, Oct., 1881; McG., P.Z.V., 138. 



Zoarivun encrusting or loosely adnate. Zoo'cia ovate, separated by narrow 

 raised lines ; surface granular ; thyrostome arched above, contracted below and 

 with a wide very shallow sinus. 



B. Living. ^Vustralia. 



