70 Descrii:>tions of New, 



Port Phillip Heady, found by Mr. Wilson and myself. 



In the structure of the zooecium this species precisely 

 agrees with 8. reticulata, but the ooecium is totally 

 different. Instead of beins: rounded and projecting, it is 

 elongated upwards, partly immersed and depressed across 

 the centre, giving it a very peculiar appearance, somewhat 

 like that of the flower of the well-known calceolaria. The 

 difference in the ooecium is too great to admit of its being 

 ranked merely as a variety of S. reticulata. 



Family Discoporellid^. 

 Lichenopora hullata, n. sp. Plate III., fig. 2. 



Zoarium encrusting, irregular ; at intervals a minutely- 

 punctate or perforated thin calcareous membrane, raised in 

 inflated eminences, covering a considerable number of cells. 

 Zooecia irregular in shape and size; prismatic, with rounded 

 angles; wall sthick, with numerous internal, minute, sharp 

 spines. The zooecia at the edges of the bullate elevations, 

 with an elongated peristome on one side, spout-like or 

 divided, directed towards the elevation ; the zooecia under- 

 neath the inflations, with their orifices, closed by a minutely 

 granular membrane. 



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



This is a most interesting form. The inflations are pretty 

 regular, large, raised high above the zooecia, and are evidently 

 ooecia. At their margins some of the zooecia are elongated, 

 and pierce the edges. In these the side of the mouth is 

 elongated in the direction of the centre of the inflation, the 

 peristome being spout-like, sometimes dimidiate or with 

 small lateral processes. The peristome of the other zooecia 

 is occasionally irregularly produced. The zooecia under the 

 inflations have their orifices closed by a minutely granular 

 membrane. 



As the generic name Lichenopora was proposed prior to 

 that of Discoporella, it ought to be retained. 



Lichenopora magnifica, n. sp. Plate III., fig. 3. 



Zoarium encrusting, thick, raised into irregular mounds. 

 Zooecia frequently closed by a membrane a short way down, 

 either entire or with a circular aperture in the centre; 

 orifice very irregular in size, usually oval, with the peristome 



