BY E. F. KALLMANN. 341 



partly on one, and partly on another, of two quite distinct 

 species. For the present, in the absence of any proof to the 

 contrary, the species should, I think, be looked upon as a 

 correctly described and valid one, belonging — though perhaps 

 doubtfully — to the genus to which Lendcnfeld assigned it. 



Halichondria clathripormis. (Text -fig.5). 



Int7'oductory. — A\though Whitelegge(56) seems to have defin- 

 itely accepted, as the type of this species, the Australian 

 Museum specimen labelled as such, it is nevertheless obvious 

 from his description of it that it cannot be an example of Len- 

 denfeld's //alir/KHK/ria rhifJiriforinh, for in no respect does it 

 agree with the latter as described except in its possession of 

 oscula of moderately large size. I find it to be of the same 

 species as the sponge (of extremely common occurrence on our 

 beaches after storms) which Whitelegge'^(54) previously de- 

 scribed under the name illinJiua finltuna Schmidt, believing 

 it to be identical with the ArervorhdIifHf finifi/fift recorded 

 from the east coast of Australia by Ridley(34) ; this, however, 

 it certainly is not, since unlike the latter it contains multi- 

 serially arranged spicules in the secondary fibres. What the 

 correct name is I am unable to say, though I have reason to 

 believe that the species will prove to be one of those described 

 b}" Lendenfeld under the generic name Chriliiiojjora. In order 

 to prevent confusion, I would recommend that this sponge be 

 known, for the present, as Challna finitima Whitelegge {non 

 Schmidt). A figure of the specimen referred to is shown on 

 Pl.xviii.(fig.l). 



On the other hand, the British Museum specimen (labelled 

 JiaVichondria rJaihriformifi) referred to by Whitelegge — a 

 small piece of which I have had the opportunity of examining 



* Whitelegge's failure to perceive this idemity is attributable partlj' to 

 the fact that the specimen is incomplete and lacking in a shape suggestive 

 of the species, and partly to the fact that, unlike all other specimens 

 known to him, it is preserved in alcohol with the soft tissues intact and in 

 this condition does not display the peculiar looseness of texture of the 

 skeleton nor the distinctive dermal pattern wliich are the two most notice- 

 able features of the sponge in the dry state of preservation. 



