84 A MONOGRAPH OF THE TERTIARY POLTZOA OF VICTORIA. 



12. 8. dcedala, McG. PL XI., fig. 15. 



Schizoporella dcedala, McG., P.Z.V., 138; S. conservata, Waters, Q.J.G.S., 

 1881, p. 340. 



Zoarium encrusting. Zooecia broad, distinct, margins deeply areolated ; 

 thyrostonie large, arched above, straight below, with a moderate-sized sinus ; 

 5-7 spines on the upper margin ; a large avicularium extending horizontally 

 outwards on each side, or occasionally on one side only, about the middle of the 

 zooecium. 



S.P. ; B. ; M. ; CO. (W.) Living. Australia. 



A full description of recent specimens will be found in P.Z.V. 



13. S. auriculata, Hassall. PL XI., fig. 16. 



Lepralia auriculata, Busk, B.M.C., II., p. 67 ; Schizoporella auriculata, Hineks, 

 B.M.P., 260. 



Zoarium bilaminate (in the fossils). Zooecia distinct, arranged in linear series 

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

 stome semicircular, the straight lower lip with a distinct sharp sinus ; below the 

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

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

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



M.O. ; B.R. ; M. 



In some specimens the zooecia are more convex than 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 opening being bounded by a semicircular margin, 

 which may be the growing edge, or may bound a space occupied by a thinner 

 material or membrane. 



14. S. subsinuata, Hineks. PL XL, fig. 17. 

 Schizoporella subsinuata, Hineks, A.M.N.H., Oct., 1884; McG., P.Z.V., 138. 



Zoarium encrusting or loosely adnate. Zooecia ovate, separated by narrow 

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

 with a wide very shallow sinus. 



B. Living. Australia. 



