248 Proceedings of the Royal Society of Victoria. 



Genus Geiliodes, Ridley. 



Megaseleres cliactinal, oxea or strougyla. Microscleres sigmata. 

 With a distinct skeleton fibre containing more or less spongin. 



Geiliodes pocttlii/ii, Ridley and Dendy. 



Geiliodes foci/linn, Ridley and Dendy, Challenger Monaxonida, 

 p. 48, pi. X. 



I refer one of Mr. Wilson's specimens to this species with a 

 little hesitation. The specimen is erect and goblet-shaped, witli 

 broad base, and contains much foreign matter. The oxea are a 

 good deal slenderer than in the type, and the whole skeleton i« 

 very irregular. 



R.N. 448 (s. 14 ; 10 f ; " mouse grey "). 



Genus Oceanapia, iSTorman. 



Sponge consisting of a central body with closed or open tubular 

 processes (tistuUe) projecting from it. Megaseleres oxea or 

 strongyla. Mici'oscleres in the form of sigmata, or altogether 

 absent. Skeleton usually coarsely spiculo-tibrous ; with a bast- 

 like reticulation beneath the dermal membrane. 



As suggested in our work on t^e Challenger Monaxonida, it 

 seems desirable to unite the genera Oceanapia and Riiizochalina 

 in one, and as Norman's name has precedence it must of course 

 be employed. 



Oceanapia mollis, n. sp. 



Massive, irregular ; \\\t\\ numerous large, prominent, collared 

 vents, rising up from the general surface and leading out of 

 great exhalant canals. Surface uneven, sometimes ridged, sub- 

 glabrous, minutely reticulate, with a few extremely small and 

 insignificant-looking, closed fistulse, not at all comparing with 

 the oscular projections in size. Texture soft, compressible, 

 resilient, fragile. Colour in spirit pale brownish-yellow. 



Skeleton, the main skeleton is a loose and almost unispicular 

 reticulation of fairly stout oxea, connected chiefly at their ends 

 by a fair amount of spongin. The dermal skeleton consists of a 

 superficial network of single spicules, more or less crossing one 

 another, and beneath this a thin bast-like layer composed of a 

 wide-meshed network of nmltispicular but i-ather slender fibres. 



