OF NEW SOUTH WALES. 319 



and the octameral in others, is a form containing the elements of 

 several classificatory systems." Dune, in Quart. Jour. Geol. Soc, 



1876, p. 309. 



I have already given in the Proc. Hoy. Soc. of N. S. W., for 



1877, a synopsis of the genus which includes only fossil species. 

 They are G- elegans, G. anomala. G. striatula, G. lituolus, all de- 

 scribed by Duncan as above, and C. bicyla, nobis, loc. cit. 



Second Div. Euphylliace^. 



Genus Euphyllia. Dana, 1846. (pars). 



Corallum tufted or subfoliaceous, the base developing very 

 little with age ; the corallites in multiplying become free above, 

 or remain united in a more or less lengthy series, but then this 

 series is always free in the costae and the calicinal centres which 

 are always distinct ; there is no trace of a columella ; septa very 

 numerous, excessively thin, bare, almost smooth below, and cos- 

 tulate in the vicinity of the calice ; endothecal traverses abundant 

 though the septal chambers are somewhat deep. 



Euphyllia glabrescens. Ghamisso. 



This is strictly a tropical species which Prof. Duncan gives in 

 his list as Australian. It is not, however, known in this country. 

 Milne Edwards describes it as coming from Raddak Island, 

 Australia. There is no such island off Australia, but probably 

 the island of that name which is one of Marshall's group, in 

 Polynesia, is meant. 



Second sub-family, Astreinj;. 



Turning now to the second sub-family of Astreidj;, that is, of 

 those which have septa deeply lobed or furnished with spines, we 

 find them divided into two sections- 1, Lithophylliaceai or 

 Astrece which are simple corals or increasing by fissiparity the 

 corallites disposed in crested tufts or in linear more or less con- 

 fluent series. 2, Astrceacea, which are massive compound corals 

 multiplying by budding and never serial. There is an inter- 



