Dr. R. V. Lendenfeld on Australian Sponges. 23 



seems that this is not the case, as Carter considers the Austra- 

 lian specimen of that sponge to be identical with his Pseudo- 

 ceratina durissima *. 



Carter's new genus Holopsamma f is identical with Mar- 

 shall's genus Psammopemma if, established five years ago, 

 and the latter name must be accepted accordingly as having 

 priority. 



The species described as H. crassa § and H. Icevis \\ cannot 

 be distinguished. I possess in my collection numerous tran- 

 sition forms between them, and all these ought to be com- 

 bined under the name given to them previously by Marshall^, 

 viz. Psammopemma densum. I think, however, that I shall 

 be able to distinguish a few species, as the canal-system is 

 not the same in all the specimens I have examined. It is, 

 however, a matter of quite unusual difficulty to make good 

 series of sections through these arenaceous sponges. 



Holopsamma lamincefavosa ** may be identical with Mar- 

 shall's genus Psammodema ft- 



Both Holopsamma fidiginosaXX ^iid H. turbo §§ are unrecog- 

 nizable. 



The establishment of a new genus Sarcocornea || || for a dry 

 Dysidea is not justified. In the diagnosis there is nothing 

 by which the only species could be distinguished from 

 Dysidea. 



Dysidea fragilis^ Johnston ^^, and Dysidea Kirhii^ Bower- 

 bank***, are mentioned. I only possess the latter in my col- 

 lection. Chaliniform species are very abundant, and I 

 possess long series of continuous transition-forms. I believe 

 this shape to be a mimicry of the true Chalinid^, which, in 

 consequence of their axial spicules, would not be very diges- 

 tible food. 



I cannot say anything about the species described as 

 Dysidea hirciniformisXX] and chaliniformis \\\. The descrip- 



* H. J. Carter, '' Description of Sponges from the Neigliboiirliood of 

 Port Phillip Heads, South Australia," Ann. & Mag. Nat. Hist. ser. 5, 

 vol. XV. p. 205. 



t H. J.Carter, ^.c. 211. 



\ William Marshall, " Ueber Dysidideu und Phoriospongien," Zeit- 

 schrift fiir wissenschaftliche Zoologie, Band xxxv. Seite ll3. 



§ H. J. Carter, /. c. p. 211. || H. J. Carter,/, c. p. 212. 



11 W. MarshaU, I. c Seite 113. ** H. J. Carter, I. c. p. 212. 



ft W. Marshall, I. c. Seite 109. XX H. J. Carter, /. c. p. 213. 



§§ li. J. Carter, I. c. p. 213. |||| H. J. Carter, I. c. p. 214. 



^H H. J. Carter, I. c, p. 215. *»* H. J. Carter, I. c. p. 216. 



ttt H. J. Carter, I. c. p 217. t|t H. J. Carter, I. c. p. 217. 



