OF NEW SOUTH WALES. 133 



ponding to the septa ; calices deep ; septa thin, close, not exsert, 

 very faintly and finely granular ; systems six, cycles four, but the 

 fourth wanting in two systems ; primaries smooth at their upper 

 edge, deeply and very delicately lobed in the lower part, where 

 the lobes form a false columella ;* on the higher side of many of 

 the calices there is a second margin as mentioned above. Di- 

 mensions, alt. 3| to 4, maj. diam. 5, min. diam. 4. 



In the curious specimen which is figured, it will be observed 

 that one of the calices seems partially formed within a larger one, 

 and that in another there is one septa-costal processes almost 

 extending, as in some of the Astrsea, across to the contiguous 

 calices. The figure of plate 12, fig. 1, is slightly enlarged. 



I have already observed in my monograph of the Australian 

 extra tropical corals that there is much confusion about the 

 habitats of the species of Gylicia given in Edw. and H. Prof. 

 Duncan refers C. Smithii to S. Africa. 



The species to which I next call attention belongs to the fifth 

 group of the Astrean family, the Astrangiacece or corals which 

 multiply by buds on a basilar expansion. It is a very small 

 species and has only one complete cycle, with rarely in some 

 systems the rudiments of a second. There is only the slightest 

 trace of any serrations at the edge of the septa and the visceral 

 cavity is completly flat and smooth at the bottom and not even 

 a remote sign of a columella. The size of the calices and the 

 fewness of the septa might induce one to suppose that they were 

 young specimens. But the buds of any species known to me 

 are not at all like this, and as the calices become narrower from 

 the base to the summit, though it might increase the number of 

 septa would not enlarge the calice. There are two very small 

 species of Gylicia referred to by Messrs. Ed. and H., but they are 

 doubtful as to their being really members of the genus. The 

 absence of any signs of a columella and the entire septa are 

 generic distinctions, yet I think it better for the present to place 

 this interesting species amongst the Cylicice. 



* This is seen verv clearlA when a section is made across the calic 



