PLATE 45. 



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PORODISCIDA. 



Stauralastrum rhopalophorum, n. sp., 

 Dicranastrum cornutum, n. sp., 

 Hagiastrum mosis, n. sp., 



Hagiastrum mosis, n. sp., 



Lateral view, from the edge. 



Hagiastrum buddhm, n. sp., . 



Stauralastrum cruciforme, n. sp. (in glycerine), 



The central capsule contains a large central nucleus with nucleolus, and is 

 surrounded by the jelly calymma and numerous small zooxanthellse. 

 The endoplasm is radially striped. 



Tesserastrum democriti, n. sp., 



Tesserastrum straussii, n. sp., 



Tesserastrum brunonis, n. sp., 

 Disk seen from the edge. 



Amphirhopalum echinatum, n. sp., 



Amphicraspedum maclagganium, n. sp., 



Amphicraspedum wyvilleanum, n. sp., 





Diam. 



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