^I^he present work is a revision of Doetor Eric Mjöberg's coliection of Australian 

 Crinoids, which Doetor Nils Odhner lias kindly entrusted to me for determi- 

 nation. I wish to convey to him in v heartiest thanks for liis courtesy. 



All the specimens taken by Doetor Mj Öberg have been previously found in 

 the Australian seas and belong to the littoral fauna. They originate from northwest 

 Australia and were collected during the months of May till July in 1911, chiefJy in 

 two localities, partly at Broome on the beach at low tide, partly about 40 miles 

 W. S. W. from Cape Jaubert at a depth of 40—80 feet. 



The speeimens are as follows: 



Gomalida pectinata (L.) with var. purpurea (J. Mull.). 



Comaster typica (Loven). 



C omaster multijida (J. Mull.). 



Zygometra microdiscus (Bell) with var. elegans (Bell). 



Amphimetra variipinna (P. H. Carp.). 



Amphimetra milberti (J. Mull.) and 



Oligometra adeonce (Lamarck). 



In describing Comatida pectinata and its variation purpurea 1 have diseussed 

 the mutual relation of both forms and carried out a statistical investigation on the 

 frequency and arrangement of the cirri. I have b} r this investigation obtained cer- 

 tain results, which cause me to doubt whether it is right to place C. purpurea as a 

 species. Provisionally I have kept it as a variety, but it is probable that it is me- 

 rely a juvenile form of the bigger C. pectinata. 



The species of the genus Comaster found in the coliection on which I have 

 worked have shown certain difficulties in identification partly because several spe- 

 cimens are juvenile forms, parti}' because some species in this genus are charac- 

 terized by distinguishing marks, which are probably more significant as marks of 

 age than of species. This circumstance has caused me to look more closely at some 

 more dubious forms and to some extent to discuss their mutual relation. 



Concerning Zygometra elegans (Bell) I have corae to the conclusion that it is 

 only a variety of Z. microdiscus. 



In the genus Amphimetra I have tested the connection and the relation between 

 .4. variipinna and crenulata (P. H. Carp.) and also examined some attributes distin- 



