54 A JlOXOGKAril 0¥ TUE XEKTIAKY POLYZOA OP VICTORIA. 



or :i foiirtli part of t lie area, witli the tubular opening fertile polyi^ide situated to 

 one side. 



M.C. 



This sj)ecies is readily distinguished by the long nearly tubular polypide opening 

 being situated to one side. At the bottom of the opcsia, in front of the tubular 

 oi'ifice, are two rounded openings, possibly communication pores. The specimens are 

 all in a single layer, but have probably been bilaminate. 



4. S. palnlii. Waters, PL VI., figs. 19, 20. 



Micropora paiida, Waters, Q.J.G.S., 1881, p. 326; SteganoporcUa i)a(ul(t, I.e., 

 1S82, p. 2(55. 



Zoariuni broadly ligulate, bilaminate. Zooecia in regular linear series, mucli 

 elongated, quadrate, the lateral margins distinct and crenulnte ; lamina depressed 

 anteriorly, fiiKdy granular and perforated ; opesia occupying about a fifth of the 

 area, having on the sides and above a thick beaded rim strongly projecting above 

 and cucullate ; from the inferior edge of the opesia a smooth calcareous plate curving 

 forwards and backwards and with a small round opening on each side. Ooecia taking 

 the place of zoojcia, broad, flat, granular on the surface and opening into the 

 zooecium below. Avicidaria on special tracts encroaching on the base of one 

 zowcium at a bifurcation, and on the corresponding side of the preceding zocEcium 

 in the series. 



S.P.; M.C. 



In the spt!cimen from which figure 20 is taken there are three ooecia. One; 

 is similar to that figured, and another is mitriform. 



Pamily Mickoporib.e. 



Zoarium encrusting, or erect and uni- or bilaminate. Zocecia with distinct, 

 raised margins ; front depressed, calcareous, usually covered by a thick epitheca ; 

 operculum complete. 



Macropora, n.g 



Zoarium unilaminate and encrusting or bilaminate. Zooecia large, broad, front 

 entirely calcai*eous ; thyrostome raised, semicircular or nearly so, not reaching the 

 margins ; peristome thickened. 



I propose this genus for the reception of tAvo species, which it seems to me 

 ought to be included in the Micropoi-idie. It dill'ers I'roni Micropora in the thicker 

 calcareous front Avail and the thickened raised ])(!ristome. Waters includes 



