NOTES ON LENDENFELd's TYPES OF SPONGES — WHITELEGGE. 287 



which is rather different from the measurements in the original 

 description, i.e., 0*077 by 0017 mm. 



Ceraochalina multiformis, var. dura, Lendenfeld. 



As previously stated the exhibited specimen bearing this name 

 is Thalassodendron viminalis, Lendenfeld. 



The specimen from the British Museum agrees with the descrip- 

 tion. 



Antherochalina dura, Lendenjeld. 



This species is misrepresented in the collection by a specimen 

 (No. 355) of Chalina globosa, Lendenfeld. There is no example 

 in Professor Dendy's donation. 



Plachochalina pedunculata, var. dura, Lendenfeld. 



The example covered by the above name is probably Pachy- 

 chalina punctata, Ridley and Dendy, as stated in my report." 

 There are many examples of Pachychalina bilamellata, Carter, 

 in the collection, but there is no specimen named by Lendenfeld, 



Plachochalina pedunculata, var. pocula, Lendenjeld. 

 I failed to find this variety in the collection. 



Plachochalina pedunculata, var. mollis, Lendenfeld. 



Two examples are exhibited under the above name, one (No. 

 335) is a young specimen of Chalina pabyiata, Lamarck, and the 

 other (No. 352) is Clathria tenuifibra, Whitelegge. The latter 

 example has been neatly perforated by a boring Isopod, and bears 

 the manuscript name of Plachochalina porosa, Lendenfeld. 



Antherochalina perforata, Lendenfeld. 



This species is represented by two examples bearing the above 

 name, and a third specimen is included in Professor Dendy's 

 donation from the British Museum. No. 315 is certainly a 

 specimen of A. frondosa. The British Museum fragment is quite 

 distinct from A. perforata. The spicules of the fibres consist of 

 (a) stoutish styli, 0*1 to 0"15 mm. long and O'Gl ram. thick ; (b) 

 abundant slender tylostyli of the ground substance, over 0'2 mm. 

 long and 0'003 to 004 mm. in diameter. I have also observed 

 what may be echinating styli, with smooth shaft and blunt apex, 

 about 06 mm. long, but the material is too scanty to satisfactorily 

 determine this point. The above is probably referable to the 

 genus Clathria. 



No. 292, from Port Phillip, accords with the figure and descrip- 

 tion in every character except one, i.e., the spicules are styli 0"09 

 to O'll mm. long, and 0"003 to 0-004 mm. in diameter, and not 

 oxea 0'09 mm. long and 0'003 mm. thick, as stated in the 

 description. 



Whitelegge— Bee. Aust. Mus., iv., 2, 1901, p. 70. 



