*Art. III. — Catalogue of Non-Calcareous Sponges collected 

 by J. Braceb ridge Wilson, Esq., M.A., in the neigh- 

 bourhood of Port Phillip Heads. 



Part II. 



By Arthur Dendy, D.Sc, 



Professor of Biology in the Canterbury College, University of New 

 Zealand ; Corresponding Member of tbe Royal Society of Victoria. 



Introductory Remarks. 



The present contribution deals with the imjjortant iMunaxo- 

 nid family of the Desmacidonida-. These are very abundant in 

 Victorian waters. No less than fifty-eight species are here 

 catalogued, of which twenty-eight appear to be new. It has 

 been necessary to institute three new genera, for which the 

 names Microtyloiella, Aniphiastrella and Fiisifer are proposed. 



Family DESMACIDONID^. 



Skeleton usually reticulate. Megascleres monactinal or 

 diactinal. Microscleres always present, of various forms, but, 

 with rare exceptions, including cheUe. 



►Sub-family Esperellix.f.. 

 Skeleton fibre not echinated by laterally projecting spicules. 



Genus Esperella, Vosmaer. 



Megascleres always monactinal, smooth styli or tylostyli. 

 Microscleres palmate anisocheho, usually with other forms 

 associated. 



Esperella enigmatica, Carter, sp. 



Esperia parasitica. Carter, A.M.N.H., February, 1885, p. 108. 

 Fseudoesperia enigmatica, Carter, A.M.N.H., December, 1886, 

 p. 455. 



