A MONOGRAPH OF THE TERTIARY POLYZOA OF VICTORIA. 65 



avicularium, with a pointed, frequently vibraculoid, maudil^le directed upwards and 

 outwards on one side of the zocecium. Ooecia large, granular. 



Var. spicata, McG., P.Z.V., 175. Zorocia finely granular or perforated ; a stout 

 conical process directed upwards from the front of the zooecium helow the trypa, 

 which it conceals. 



M.C. A common cosmopolitan living species. 



The only sjiecimens I have seen are of the variety sjncafa. The zocBcia are 

 granular, or prohahly from the gi'anulations hcing worn off, perforated with small 

 pores. In many of the zocccia the peristome is raised and produced inwards on each 

 sides so as to be nearly jjcrsonate. 



2. M. diadema, McG. 



Leprcdia diadema, McG., P.Z.V., 37 ; L. canaliculata, I.e. ; Microporella. 

 diadema, McG., T.R.S.V., Nov., 1881 ; P.Z.V., 175 ; Hincks, A.M.N.H., March, 

 1885; M. decorata, Waters, Q.J.G.S., 1882, p. 508; id., 1887, p. 54; id., 

 A.M.N.H., Sept., 1887. 



Zoarium encrusting. Zooscia broad, distinct, areolated round the margins ; 

 trypa round or lunate ; an avicularium on each side, with the long pointed mandible 

 directed upwards and outwards. Ooecia in recent specimens with a beaded rim. 



B. Living Australia and New Zealand. 



Waters considers this species identical with the Eschara decorata of Reuss, a 

 determination which I consider at least doubtful. The only fossil specimen I had 

 was unfortunately mislaid before a drawing was made. Eor the varieties see 

 P.Z.V., 175. 



3. 31. malusii, A^ouin, sp. PI. IX., fig. I. 



Lepralia malusii. Busk, B.M.C., Pt. II., 83 ; Crag. Pol. 53 ; McG., P.Z.V., 36 ; 

 Microporella malusii, Hincks, B.M.P., 211 ; Waters, Q.J.G.S., 1883, 437 ; id., 1887, 

 p. 54; Busk, C.P., 137 ; McG., P.Z.V., 175. 



Zoarium encrusting. Zococia distinct, ovate or pyriform, convex ; trypa lunate, 

 from a third to half-way down the zooecium ; numerous stellate pores arranged in 

 one or more rows round the margin and beneath Ihe lower lip of the thyrostome, 

 leaving a clear space above the trypa ; four or five oral spines. 



S.P. A cosmopohtan living species. 



4, M. rudis, n.sp. PI. IX. fig. 2. 



Zocecia large, oliscurely liexagonal ; surface sparsely perforated and closely and 

 minutely punctate ; trypa semilunar, the convex edge above ; thyrostome slightly 



