44 P. M. DUNCAN ON THE ECHTNODERMATA OF THE 



Laube, and Etheridge, were described in the essay on the fossil 

 Madreporaria, it is not necessary to refer to them again. 



Nor do I refer to the New-Zealand strata which have yielded 

 Echini, as they will probably form the subject of a future communi- 

 cation. I have, however, noticed all the species of Echini hitherto 

 described ; and I have carefully compared all the fossil species not 

 only with their geological, but also with their recent representatives 

 and allies. 



In doing this it has been necessary to absorb some genera, and 

 to consider some species as varieties; and this proceeding has been 

 forced upon me principally by the insight I have obtained into the 

 variability of the recent Echini. Alexander Agassiz has placed me 

 under great obligations by the gift of his magnificent works on the 

 revision of the Echini ; and I have been able to determine some 

 difficult points by the study of Loven's ' Etudes sur les Echino'idees,' 

 and especially those relating to the Hemipatagi now included in the 

 genus Lovenia. 



II. List of Species of the Australian Cainozoic Deposits. 



1. Leiocidaris austral-ice, sp. nov. Cape Otway. 



2. PsammecJiinus Woodsi, Laube. Murray Cliffs. 



3. Paradoocechinus novus, Laube. Murray Cliffs. 



4. Temnechinus lineatus, sp. nov. Mordialloc. 



5. Echinanthus testudinarius, Gray. Lindenow, Mitchell Kiver. 



6. Echinarachnius parma, Gray. Cape Otway, Cardies River. 



7. Arachnoides Loveni, sp. nov. Mordialloc. 



8. „ elongatus, sp. nov. Mount Gambier. 



9. „ australis, Laube, sp. Murray Cliffs. 

 (Syn. Monostychia australis, Laube.) 



10. Echinolampas ovulum, Laube. Murray Cliffs. 



11. Rhynchopygus dysasteroides, sp. nov. Cape Otway. 



12. Echinobrissus australios, sp. nov. Cape Otway. 



13. Pygorhynchus Vassali, Wright. East of Glenelg River. 



14. Catopygus elegans, Laube. Murray Cliffs. 



15. Holaster australis, sp. nov. Cape Otway. 



16. Maretia anomala, sp. nov. Mouth of Sherbrook River. 



17. Eupatagus rotundus, sp. nov. Murray Tertiaries. 



18. „ Laubei, sp. nov. Mouth of Sherbrook River. 



19. ,, murrayensis, Laube. Murray Cliffs. 



20. „ Wrighti, Laube. Murray Cliffs. 



21. Lovenia Forbesi, Woods and Duncan, sp. Mount Gambier, 



Mordialloc, &c. 

 (Syn. Hemipatagus Forbesi, Woods and Duncan.) 



„ ,, var. minor, nov. Mordialloc. 



Lovenia Forbesi, var. Woodsi, Etheridge. Mordialloc. 

 (Syn. Hemipatagus Woodsi.) 



22. Schizaster ventricosus, Gray. Adelaide. 



'23. Micraster brevistella, Laube. Banks of the Murray. 

 24. Megalaster compressa. Banks of the Murray. 



