by r. von lendenfeld, ph.d. 849- 



Colour. 

 Light brown, skeletons yellowish-grey. 



Canal System. 

 A. Vestibule canals. 



The central continuous cavity is a primitive form of pseudo- 

 gaster. The reticulation is pretty regular below the outer surface, 

 where the lamellae are always more or less vertical to the surface. 

 Towards the interior however, they become slightly irregular. 

 The straight prismatic spaces of the outer portion, lead into more 

 oblique canals before they enter the pseudogaster. 



B. Canal system proper. 



The subdermal cavities are small and inconspicuous. The 

 canals in the interior rarely exceed the width of 0.2 mm. This 

 species therefore appears more dense than the foregoing. 



Skeleton. 

 The skeleton of this species is similar to the foregoing. 



I. Variety, Halme gigantea micropora. 



With long and slender processes ; the meshes of the network 

 on an average 6 mm. in width. 



Geographical Distribution. 

 East Coast of Australia, Illawarra, (Ramsay.) 



Bathymetrical Distribution. 



0) 



II. Variety, Halme gigantea intermedia. 



More irregular in shape, the digitate processes terminally more 

 rounded ; the pores or meshes of the network on an average 

 7-8 mm. 



