EXPLANATION OF PLATE XLVI. 



Fig. 1. Sertularella undulata, sp. nov. 

 Fig. 2. Sertularella tasmanica, sp. nov. 

 Fig. 3. Sertularia pusilla, nom. nov. 



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Fig. 5.- 



Fig. 6.- 



Figs. 1-6x40. 



