102 EUCHALINA. — CHALINODENDBON, 



The skeleton consists of a network, with meshes 0*1 millim. wide and fibres 

 0-04 millira. thick. The spicules are straight oxea, 0-09 millim. long and 

 0-002 millim. thick. 



I distinguish two varieties : — 



Euchalina exigua, var. simplex, Lendenfeld. 



Euchalina exigua, var, simplex, R. v. Lendenfeld, " Die Chalineen des austra- 

 lischen Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 818 

 (1887). 



With simple, straight, and unbranched digitate processes. 



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

 N, S. W. {Lendenfeld). 



Euchalina exigua, var. arborea, Lendenfeld. 



Euchalina exigua, var, arhorea, E,. v. Lendenfeld, " Die Chalineen des austra- 

 lischen Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 818 

 (1887). 



With much branched and occasionally anastomosing digitate processes. 



Geographical Distribution. — West coast of Australia : Queensland 

 {Uamsay). 



Genus CHALINODENDRON. 



Dendritic Dactylochalininse, with conuli and abundant slender 

 oxeote spicules. 



Chalinodendron ramosum, Lendenfeld. 

 (Plate IV. fig. 2.) 

 Chalinodendron rantostim, R. v. Lendenfeld, " Die Chalineen des australischen 

 Gebietes," Zoologische Jahrbiicher (Spengel), Band ii. Seite 820 (1887). 



Soft and resilient, branched, digitate, or lobose sponges, which attain a height 

 of 300 millim. ; the branches are 8 millim. thick. The surface is covered with 

 small, sharp, and slender conuli. Oscula scarce, 1 millim. wide. 



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

 0-03-0-06 miUim. thick. The spicules are straight or slightly curved oxea, O'll 

 millim. long and 0-005 millim. thick ; fairly abundant in the fibres. Similar 

 spicules are also scattered throughout the ground-substance. 



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



N. S. W. (liamsai/, Lendenfeld). 



