202 HABITS OF SOME AUSTRALIAN ECHINI, 



have been taking an interest in our Echini for many years. There 

 is no species known to me in any of our Museums in any of the 

 colonies. 



Echinus Darnleyemis, nolis. Since I described this species I 

 have seen other specimens from different parts of the East 

 Australian coast. It is very gregarious and goes, I should imagine 

 in shoals on sandy bottoms. I sent specimens to Professor 

 Alexander Agassiz, of Cambridge Mass., and he tells me that the 

 species was known to him and he always regarded it as a variety 

 of the South American E. magellanicus. But as that species 

 differs from mine in some important particulars, is not known to 

 occur outside American waters, we may perhaps regard ours as 

 distinct. 



Hipponoe variegata, Leske. I have already remarked the very 

 variable character of this species, but I am more disposed than 

 ever to regard the large individuals which are found occasionally 

 in Port Jackson as distinct species. The described light violet 

 or blue variety is not at all uncommon inside the Barrier Beef. 

 Every specimen met by me was denuded of spines and cast high 

 and dry amid the debris on the sand and coral shingle, which is 

 found on one side of every reef. It is always a most conspicuous 

 object of light violet or lilac colour. The white tubercles and the 

 markings of the coronal sutures givingitamost elegant appearance. 

 These features and the very deep actinal cuts easily distinguish it. 



Ex/echinus chloroticus, Vernl. This seems to be rather a common 

 species in New Zealand, judging from the facility with which 

 specimens are obtained. The spines are short and stout, and of 

 a uniform green colour. I know nothing of its habits, but should 

 be inclined to think that it took in New Zealand the place which 

 is occupied by Strong ylocentrotus eurythrogrammus in Australia. 

 Two small and young specimens were found near Port Jackson. 



Echinanthm testudinarius. In my list of Echini I have stated 

 that this species is found fossil in the Murray Eiver beds, but 



