or Little Known, Polyzoa. 71 



produced on one side into a thick, spout-like^ nearly erect 

 projection, or sometimes divided as in L. pristis. The 

 zooecia in many parts arranged on slight elevations as 

 radiating ridges from a depressed central portion. In the 

 lower and intervening zooecia the peristome slightly 

 developed, although often divided into two or three narrow 

 processes ; those on the ridges with the spout-like peristome 

 large, entire or with small secondary processes on the sides, 

 always pointing towards the central depression. 



Port Phillip Heads, Mr. J. B. Wilson. 



The specimen of this splendid species which I have 

 examined spreads as an encrusting layer over a calcareous 

 mass composed of cellepores and other polyzoa, and covers 

 an extent of upwards of six inches. The whole is covered 

 with large, irregular elevations, which are again nodulated. 

 These large elevations are in part caused by the elevation of 

 the calcareous zoophy tal mass on which it grows, but several 

 of the nodules having a diameter of a quarter of an inch or 

 more, are entirely of this species^ and in parts the continuous 

 layer is of an equal thickness. As in other species, the 

 zoarium extends by a basis, or lamina, in which the cells are 

 developed. The individual zooecia are more allied to those 

 of Lichenopora (Discoporella) pristis than to those of any 

 other species. All over the surface are slight elevations, 

 composed of radiating, raised series, spreading from a central 

 elongated or rounded level part. The zooecia in the lower 

 parts, between the rays and generally over the zoarium, 

 either have the peristome not produced, or but slightly and 

 divided into two or three sharp processes. Those on the 

 ridges have it produced on one side into a stout, spout-like 

 process directed towards the centre of the elevation. At first 

 sight the numerous circular or oval elevations with radiating 

 lines look as if the whole zoarium were formed by the 

 coalescence of numerous small colonies, but it is not so, the 

 margin being continuous. 



Family Discoporellid^. 

 Flosculipora, n. genus. 



Zoarium small, pedunculate ; the peduncle consisting of 

 smooth tubes or ridges, with intervening cancelli towards 

 the upper part. Zooecia opening on an expanded summit ; 

 peristome produced, dimidiate or lacerated, with numerous 

 intervening cancelli. 



