350 Mr. H. J. Garter oti 



reticulation like dry glue, scantily cored with thin acerate 

 mDiculeSj but denuded of everything else, apparently from 

 lon^" washing in the waves of the beach off which they had 

 been gathered for preservation — characters which sufficed for 

 my Catalogue of the specimens in the British Museum, but 

 are of no practical utility for general purposes ; hence, I cannot 

 insist upon its being retained under any other circumstances. 

 There were only three of these specimens, and unless future 

 observation of them in an unmutilated and fresh state should 

 justify their separation from the rest of the Multiformia, the 

 group " Durissima " had better be abolished. 



Fam. 3. Pseudoechinonemida, new fam. 



Lastly, it becomes necessary to add this third family to 

 the order EchinOjSTEjNIA for the Areniferous species, as pointed 

 out under the head of " fam. Pseudohircinida " in ' Annals,' 

 1885, vol. XV. p. 319, where my reasons for so doing have 

 been given at length, so I need not repeat them here. 

 As an illustration of this family I will at once briefly state 

 the characters of the fragment in my possession, to which 

 allusion has already been made in the " OZ's." to EcJiino- 

 clathria favus^ before going to the species in Mr. Wilson's 

 collection. 



EcMnodathi'iafavus^ var. arenifera^ n. var. 



Fragment cylindrical, round at the free extremity, where 

 there is a contracted, circular, cloacal aperture corresponding 

 with the hollow interior j broken off at the other end. 

 Identical in structure and spiculation with the species 

 Echmoclathria favus. Consistence fragile, friable. Colour 

 now, in its dry state, grey-brown, sand-like. Fibre cored 

 with foreign objects in addition to its natural spiculation, 

 together with arenaceous fibre alone; many more foreign 

 objects adhering to the outside of the fibre than are situated 

 in its interior. Size of fragment 10 in. long by about f in. in 

 diameter ; cloacal canal about |- in. in diameter. 



Hob. Marine. 



Loc. Unknown. ? South coast of Australia. 



Obs. This variety of EcMnoclathria favus seems to have 

 been occasioned by its having grown in the midst of sand, 

 which, as just stated, seems to be much more plentiful in and 

 around the outside of the fibre than in its interior. 



. Our Classification so far therefore would now stand thus : — 



