PLATE 8. 



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COLLOSPH^ERIDA. 



Acrosphcera echinoides, n. sp., 

 Acrosphcera collina, n. sp., 

 Chcenicosphcera nassiterna, n. sp., 

 Chcenicosphcera murrayana, n. sp., 

 Chcenicosphcera flammabunda, n. sp., . 

 Clathrosphcera circumtexta, n. sp., 

 Clathrosphcera arachnoides, n. sp., 

 Clathrosphcera lamellosa, n. sp., 

 Xanthiosphcera erinacea, n. sp., 

 Xanthiosplmra lappacea, n. sp., 



Xanthiosphcera lappacea, n. sp., 



A complete spherical ccenobium. The associated central capsules (each 

 with a double shell) are densely crowded in the central part of the 

 calymma, whilst its peripheral part is occupied by a layer of large 

 alveoles. Numerous xanthellse or yellow cells are scattered in the 

 calymma. 



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