On Sponges from South Australia. 431 



XL. — Descri2Jtions of S2)onges from tlie NeighhourJwod of Port 

 Philli'p Heads J South Australia, continued. By H. J. 

 Caeter, F.R.S. &c. 



[Continued from p. 127.] 



Order VII. HEXACTINELLIDA. 



Families. Groups, 



11. Patulina. 

 2. Tubulins. 

 3. Scojiulifera. 



2. SarcohexactinelUda [t' go«ettitera. 



I 6. ijirotuiirera. 



8. Sarcovitreohexactinellida j Only one species known, viz. ^-^^^/ec- 



( telia cucumer, Owen. 



This arrangement, based on a hasty study of ahnost all the 

 then-known species of liexactinellida, whose result may be 

 seen in the 'Annals' of 1873 (vol. xii. p. 349, pis. xiii. to 

 xvii.), will be found towards the end of my Classification {ib. 

 1875, vol. xvi.pp. 199 and 200), accompanied only by the names 

 of the species respectively which illustrate the groups that 

 have been more particularly noticed in the paper to which I 

 have just alluded. Two more species were described and 

 illustrated in 1877 ('Annals,' vol. xix. p. 122, pi. ix.) and 

 two or three more in 1885 {;ib. vol. xv. pp. 387-406, pis. xii. 

 to xiv.), among which is the famous Farrea occq, now 

 deposited in the British Museum. Those which have been 

 described by others since the date of publication to which I 

 first alluded, and which are very few in number, must be 

 sought for by the student himself. 



Unfortunately all that I have stated has been from dry 

 specimens, and the only instance worth mentioning in which 

 the structure of the soft parts has been described from a 

 Hexactinellid sponge preserved in the ivet state is the description 

 by Prof. Dr. F. E. Schulze of a specimen of Euplectella asper- 

 gillum, which he received in " January 1880 from the ' Chal- 

 lenger ' Office, Edinburgh," for this purpose (' Challenger ' 

 Reports, Sponges Hexactinellidge, pi. A). To mention the 

 author's name is a sufficient guarantee for the authenticity of 

 this kind of work, in which he has never been equalled and 

 can, with his power of delineation, hardly be surpassed. 

 Referring the student to the paper itself, I would only here 

 observe that, at p. 6 of the " separate copy " which the author 



