220 A Catalogue of the 



Zocecia tubular or prismatic, closely packed, of varying size, with 

 the mouth not projecting. No proper cancelli. 

 D. corrugata, M^G. T.R.S.V., April, 1880. 



Favosipora, Jf'G. 

 Zoarium encrusting, flat or elevated into irregular ridges, the 

 whole surface of which is occupied by zooecia. Zocecia prismatic, 

 closely packed, of various sizes, usually not projecting, but occasion- 

 ally with the mouth produced towards the edges of the zoarium or 

 the summits of the ridges. 



F. rugosa, M^G. T.R.S.V., 1884. 



Flosculipora, 31' G. 



Zoarium small, pedunculate, the peduncle consisting of smooth 

 tubes or ridges^ with intervening cancelli towards the upper part. 

 Zocecia opening on the expanded summit, the peristome produced, 

 dimidiate or lacerated, with numerous intermediate cancelli. 

 F. pygmaea, M^G. T.R.S.V., July, 1886. 



Port Phillip Heads, J.B.W. 



Family. Frondiporid^. 



Zoarium massive, stipitate, simple or ramose. Zooecia tubular, 

 connate, continuous from the base, aggregated into fasciculi, open- 

 ing only at the extremities or in regular series at the sides of the 

 branches. No cancelli. 



Fasciculipora, D'Orb. 



Zoarium erect, simple or branched or lobate. Zooecia opening 

 only at the extremities of the branches or (in F. bellis) in one or 

 more regular series below the extremity. 

 F. gracilis, M^G. T.R.S.V., Dec, 1882. 

 F. bellis, 3I'G. T.R.S.V., Dec, 1883. 

 F. fruticosa, M^G. T.R.S.V., Dec, 1883. 

 F- ramosa, V'Orb. B.M.C., Part III., p. 37. 



Portland, CM. 



Sub-Order III. CTENOSTOMATA, Busk. 



Family. Flustrellid^. 



Zoarium adherent or erect, gelatinous. Zooecia with a bilabiate 

 orifice. 



Frustrella, Gray. 

 The only genus. 



F. cylindrica, Hincks. 



( = F. hispida, var. cylindrica, Hincks. A.M.N.H., May, 1884). 



