154 AUSTRALIAN SPONGES DESCRIBED BY CARTER, 



The species described as H. crassa (1) and H. Isevis (2) cannot 

 be distinguislied. I possess in my collection numerous transition 

 forms between them, and all these ought to be combined under the 

 name given to them previously by Marshall (3), viz., Psamma- 

 pemma den sum. I think 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, connected with quite unusual 

 difficulties to make good series of sections through these arenaceous 

 Sponges. 



Holopsamma laminpefavosa (4), may be identical with Marshall's 

 genus Psammoclema (5.) 



Both Holopsamma fuliginosa (6), and turba (7) are unrecog- 

 nisable. 



The establishment of a new genus Sarcocornea (8), 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 Johnstone (9) and Dysidea Kirkii Bowerbank 

 (10) are mentioned. I only possess the latter in my collection. 

 Chaliniform species are very abundant and I possess long series 

 of continuous transition-forms. I believe this shape to be caused 

 by mimicry after the true Chalinidae, which in consequence of 

 their axial spicules are not very digestible food. 



I cannot say anything about the species described as Dysidea 

 hirciniformis (11) and chaliniformis (12). The descriptions are so 

 short that it is simply impossible to make any use of them. 



(1) H. J. Carter. Dcsci'iptions of Sponges from the neighbourhood of 

 Port Phillip Heads, South Australia. Annals and Magazine of Natural 

 History, Ser. 5, Vol. XV., p. 211. 



(2) H. J. Carter. L.c, p. 212. 



(3) William Marshall. Ueber Dysididen und Phoriospongien. Zeit- 

 schrift fur wissenchafsliche Zoologie. Band 35, Seite 113. 



(4) H. J. Carter. L.c., p. 212. 



(5) William Marshall. L.c, Seite 109. 



(6) H. J. Carter. L.c, p. 213. 



(7) H. J. Carter. L.c, p. 213. 



(8) H. J. Carter. L.c, p. 214. 



(9) H. J. Carter. L.c, p. 215. 



(10) H. J. Carter. L.c, p. 216. 



(11) //. /. Carter. L.c, p. 217. 



(12) //. /. Carter. L.c, p. 217. 



