PREFACE. 
THE object of this Catalogue is to (1) give a list of the Echin 
in the Museum Collection; (2) to record correct habitats of the 
Australian species and the localities of such as have been met 
with by our Collectors, thereby showing the distribution of 
fauna ; and lastly (8) to point out our deficiencies, in the hope 
that our friends in other countries may feel inclined to fill up 
some of the numerous gaps by donations or offers of exchange. 
I take the present opportunity, on behalf of the Trustees 
of the Australian Museum, to offer our best thanks to 
Captain Hrxson, R.N., President of the Marine Board of 
New South Wales, for the interest he has shown in our work, 
in so liberally placing at our disposal a steam launch for 
dredging purposes, by which means the museum has been lately 
so greatly enriched in the Marine Fauna of Port Jackson, not 
only in the Crustacea, Echinodermata, and Celenterata, but 
also in many orders and families of Marine Vertebrates and 
Invertebrates; also to Dr. Junrus Von Haast, Proressors 
Parker and Hurrton, of New Zealand, and other friends of the 
Institution, who have from time to time presented specimens. 
The nomenclature, synonymy, and arrangement has been 
compiled chiefly from two of A. Agassrz’s great works, the 
“Revision of the Echini,” and the “Report of the Voyage of 
the Challenger,” with occasional reference to the “ Catalogue 
Raisonné des Echinides”’ of Louts A@asstz and Drsor, in the 
Annales des Sciences Naturelles, and to Proressor F, Jerrrey 
BeExv’s account of the Echinodermata collected by Dr. CoppincEer 
during the Voyage of H.M.S. “ Alert.’’ These works are 
here quoted respectively as the “ Revision of the Echini”’ 
(Rev. Ech.) ; the “Voyage of the Challenger” (Voy. Chall.) ; 
“Voyage of the Alert” /Voy. Alert); and “ Catalogue Raisonné 
des Hchinides;” ‘“C. R. Ech. Ann. Se. Nat.’ Occasional 
reference is also made to Dr. Gray’s “Catalogue of the 
Echinodermata in the British Museum,” and to Proressor 
Duncan’s and Proressor Bett’s papers in the “ Proceedings 
and Journal of the Zoological and Linnean Societies of London.” 
All the above-mentioned being in the Museum Library, are 
of easy access to any one desirous of studying the subject, or 
for reference. 
