Catalogue of Non-Calcareous Sponges. 251 



Hymeniacidon celata, Bowerbank, British Spongiadre, vol. ii., 

 p. 212, vol iii., plate, xxxviii., tigs. 5, 6. 



Cliona celata, Carter, A.M.N.H., December, 1886, p. 458. 



I give only some of the more important references to the 

 literature of this common species. As regards the identification 

 of the Australian with the European form I rely upon Mr. 

 Carter's great experience. There happens to be only one 

 specimen in the present collection, pei'forating and inhabiting 

 a dead oyster shell, but I do not think the species is by any 

 means uncommon in Port Phillip. The sponge may be readily 

 recognised by its perforating habit and oidy pin-head spicules. 



R.N. 452 (s. 9, 17 f.; "gallstone-yellow"). 



B.M. sp. 16 ("Cliona celata, Grant?" [Westernport] ; Reg. 

 86-12-15-135). 



Family SPIRASTRELLID^. 



Main skeleton confused or reticulate. Megascleres usually 

 tylostylote or stylote, occasionally becoming oxeote. Microscleres 

 some form of aster, often forming a dermal crust. 



Genus Spirastrella, Schmidt. 



Microscleres typically spined spirula? (spirasters) ranging to 

 double asters and irregular spherasters and spined microxea. 



This interesting genus appears to have its head-quarters in 

 Australian waters and is represented in the collection by some 

 very remarkable and beautiful species. 



Spirastrella spinispirulifer, Carter, sp. 



Suberites spi?iispiru lifer, Carter, A.M.N.H., May, 1879, p. 345, 

 pi. xxviii., figs. 6, 7. 



Suberites spinispirulifer, Carter, A.M.^.H., December, 1886, 

 p. 456. 



This beautiful species may be easily recognised by its minute 

 spiral microsclere, resembling that of Trachycladus, but spined. 

 The external form is massive, solid ; the surface subglabrous but 

 may be warty ; the texture fairly compact and the colour in 

 spirit pale greyish-yellow. 



R.N. 622 (x, 19 f ; " orange-ochraceous "). 



B.M. sp. 10 ("Suberites spinispirulijera, C," Reg. 86-12-15-112). 



