96 BIPHONOCHALINA. 



Siphonochalina typica, Lendenfeld. 

 SipJionocJialina typica, E,. v. Lendenfeld, " Die Chalineen des australischen 

 Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 804 (1887). 



The sponge consists of a reticulate mass of tortuous, repent tubes, 12 millim. 

 thick, from which simple, erect branches, 15-20 millim. thick, arise. The 

 whole sponge attains a breadth of 500 millim. and a height of 300 millim. 

 The upright tubes anastomose here and there, or they are joined by secondary 

 tubes of smaller size. Scarce, sharp-pointed, and irregular conuli project from 

 the surface. 



The slceleton consists of a network of fibres 0*05 millim. thick, with meshes 

 0*5 millim. wide. The spicules, oxea, are scattered, 0*0087 millim. long 

 and 0-0009 millim. thick. 



Geographical Distbibution. — East coast of Australia : Port Jackson, 



N. S. W. {Lendenfeld). 



Siphonochalina osculata, Lendenfeld. 



Siplionoclicdina osculata, R. v. Lendenfeld, " Die Chalineen des australischen 

 Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 807 (1887). 



Large bi'auched sponges, which attain a height of 200 millim. The branches 

 are 20-25 millim. thick. The surface is covered with sharp, more or less 

 abundant conuli. The prseoscula are small, 2-8 millim. in diameter, and 

 situated on the ends and sides of the tubes. 



The skeleton consists of a network of fibres 0*08-0*01 millim. thick, with 

 meshes 0*26-0*3 millim. wide. The spicides, oxea, are abundant, 0*08-0*93 

 millim. long and 0*0013-0*002 millim. thick. 



Siphonochalina osculata, var. macropora, Lendenfeld. 



Siphonochalina oscidata, var. macropora, E.. v. Lendenfeld, " Die Chalineen des 

 australischen Gebietes," Zoologische Jahrbiicher (Spengel), Baud ii. Seite 

 807 (1887). 

 Tubular sponges, attaining a length of 300 millim. The tubes are 25 millim. 

 thick,, the vents 8 millim. wide ; the conuli abundant and sharp. 



The skeleton consists of a network of fibres 0*08 millim. thick, with meshes 

 0*26 millim. wide. The spicules occupy, in some parts, the whole of the 

 fibre, and in others they appear as axial bundles ; they are oxea, 0*093 millim. 

 long and 0*0013 millim. thick. 



Geographical Distribution. — West coast of Australia : Western Australia 

 {Baily). 



