100 DACTTLOCHALINA. 



Dactylochalina mollis, Lendenfeld. 



Dactylochalina mollis, R. v, Lendenfeld, " Die Chaliueen des australiscben 

 Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seifce 812 (1887). 



Soft and resilient digitate sponges, which attain a length of 50 millim. 

 The branches are regularly cylindrical, and on an average 10 millim. thick. 

 The surface is smooth ; the oscula are situated terminally. 



The skeleton consists of a network with meshes 0*3 millim. wide and fibres 

 0*03 millim. thick. The sincules are straight oxea, 0"09 millim. long and 

 0-002 millim. thick. 



Geogkaphical Distribution. — East coast of Australia {Bamsay). 



Dactylochalina monilata; Uidley. 



Chalina monilata, S. O. Eidley, "Report on the Sponges," lieport on the 

 Zoological Collections made during the Voyage of H.M.S. ' Alert,' p. 394 

 (1884). 



Dactylochalina australls, R. v. Lendenfeld, " Die Chalineen des australiscben 

 Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 813 (1887). 



Large, digitate sponges, with roughened surface and prominent oscula. The 

 sponge attains a length of 300 millim. The cylindrical branches, which are 

 repent and anastomose here and there, are 8-20 millim. thick ; there are 

 often so many of them that one transverse section would cut about 60 repent 

 branches. 



The sl-eleton consists of a network with meshes 0*3 millim. wide and fibres 

 0*03-0*08 millim. thick; the sjncules are curved oxea, 0'06 millim. long and 

 0-002 millim. thick. 



GeogbapiiicaI; Distrtbutiox. — North coast of Australia : Torres Straits 

 (' Alert '). East coast of Australia : Port Jackson, N. S. W. {Lendenfeld). 

 South coast of Australia : Port Phillip, V. {Lendenfeld). 



Dactylochalina reticulata, Lendenfeld. 



Chalina polychotoma, H. J. Carter, " Descriptions of Sponges from the Neigh- 

 bourhood of Port Phillip Heads, South Australia," Annals and Magazine 

 of Natural History, ser. 5, vol. xvi. p. 284 (1885). 



Dactylochalina reticulata, H. v. Lendenfeld, " Studies on Sponges. — IV. On 

 two cases of Mimicry in Sponges," Proceedings of the Linnean Society 

 of New South Wales, vol. x. p. 571 (1886). 



Dactylochalina reticulata, R. v. Lendenfeld, " Die Chalineen des australiscben 

 Gebietes," Zoologisclie Jahrbiicher (Spengel), Band ii. Seite 813 (1887). 



