PLATE 8. 



COLLOSPH^KIDA. 



Diain. Page 



Fig. 1. Acrosphara echinoides, n. sp., . . . . x 400 100 



Fig. 2. Acrospluzra collina, u. sp., . . . . x 300 101 



Fig. 3. Chcenicosphcera ncuriterna, n. sp., . . x 400 103 



Fig. 4. Chcenicosphcera murrayana, n. sp., . . . . x 300 102 



Fig. 5. Chcenicosphcera flamtnabunda, n. sp., . . . x 300 103 



Fig. 6. Clathrosphcera circumtexta, n. sp., . . . . x 400 118 



Fig. 7. Clathrosphwa arachnoides, n. sp., . . . x 300 119 



Fig. 8. Clathrospluera lamellosa, n. sp., . . . . x 300 119 



Fig. 9. Xanihiosphcera erinacea, n. sp., . . . . . x 400 120 



Fig. 10. Xanthiospluera lappacea, n. sp., . . , . x 300 120 



Fig. 11. Xanthiosphvera lappacea, n. sp., . . . x 100 120 



A complete spherical ccunobiuin. 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 xanthellae or yellow cells are scattered in the 

 calymma. 



