HOPLOCHALINA. — DACTYLOCHA.LINA. 9& 



thick. The ground-substance is opaque and quite untransparent ; in this 

 respect our sponge diifers from all the other Chalinids. 



Geogeaphical Distribution.— East coast of Australia: Port Jackson, 

 N. S. W. {Le^vdenfeld). 



Hoplochalina tenella, Lendenfeld. 



Hoplochalina tenella, R. v. Lendenfeld, " Die Chalineen des australischen Ge- 

 bietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 823 (1 887). 



Small, massive, or incrusting sponges, which attain a breadth of 30 millim. 

 and a height of 20 millim. The surface is covered with small conuli. 



The sl-eleton consists of dendritically ramifying fibres, the final branches 

 of which are on an average O'l millim. thick. The spicules are very abundant 

 obliquely situated oxea, 0-4 millim. long and 0-013 millim. thick. 



Geographical Distribution. — South coast of Australia : Port Phillip, V. 

 (Lendenfeld). 



Hoplochalina renieroides, Lendenfeld. 



Hoplochalina renieroides, R. v. Lendenfeld, " Die Chalineen des australischen 

 Gebietes," Zooiogische Jahrbucher (Spengel), Band ii. Seite 823 (1887). 



The sponge consists of straight digitate branches, which are pretty much 

 branched, and on an average 20 millim. thick. The whole sponge attains a 

 height of 200 miUim. 



The dendritic skeleton consists of fibres 0-067 millim. thick, which are charged 

 with very abundant curved oxea 0-25 millim. long and 0-013 millim. thick. 



Geographical Distribution. — South coast of Australia - St. Vincent Gulf, 

 S. A. {Haacke). 



Group DACTYLOCHALININiE. 



Chalininae with regularly cylindrical, solid digitate processes. 

 The spicules are slender and numerous. Main and connecting 

 fibres well defined. 



Genus DACTYLOCHALINA. 



Dactylochalininse with stout digitate processes. Skeleton-net 



with wide meshes. 



h2 



