BV £. F. HALLMANN. 335 



that of IJ einitedania (inonijnia Carter i^v'ide Appendix), and of 

 that species I consider it to be an example. This discrepancy 

 between the ostensible type-specimen and the description of 

 the species renders extremely significant the fact that the 

 skeletal characters ascribed by Lendenfeld to Reniera 'pandcta 

 are not only quite inappropriate to the genus to which he has 

 assigned it, but are even inconsistent with his definition of the 

 family to which it belongs; for the Ilomorrha'phidce. are de- 

 fined by him as having only oxeote or strongylote megasclera, 

 whereas the spicules of Rtniera -pandaia are stated to be 

 stylote. 



The evidence regarding Reniera iKuidica seems to me, there- 

 fore, to justify the conclusion that the skeletal characters 

 attributed to it are those of a different species from that upon 

 which the description of its external characters was based, 

 and that the latter species, represented by the above specimen, 

 is that to which the name Reniera fandcta was intended by 

 Lendenfeld to apply ; but, as to the identity of the former 

 species, I am yet unable to express an opinion. 



Under the circumstances, I consider that the name Reniera 

 pandcta should be regarded as a synonym of Heniitedania 

 anonyma. 



Rp:niera lobosa. 



No specimen labelled as Reniera lobosa occurs either in the 

 collection of the Australian Museum or among the fragments 

 recently received from the British Museum ; and no sponge 

 admitting of identification with the species is known to me. 



Petrosia hebes. (Text-fig.4). 

 Introductory. — As Whitelegge has already indicated, the 

 specimen standing as the type is sufficiently in agreement with 

 the description of the species to obviate any doubt as to its 

 being a genuine example thereof, but the description omits 

 certain important particulars concerning the spiculation. To 

 this it may be added that the specimen is specifically identical 

 with a fragment labelled Petrosia hebes from the British 

 Museum. The information furnished by Whitelegge is very 



