PLATE 12. 



OROSPH.ERIDA, ASTKOSPH^BIDA et LIOSPH.ERIDA. 



Diam. Page 



Fig. 1. Orosphcera huxleyii, n. sp. (vel Oroscena huxleyii), . . x 50 1599 

 Fig. la. A piece of the network, the hare of which contain partly an axial 



canal, . . . . . . . x 200 1599 



Fig. 2. Conosphcera orthoconus, n. sp., . . . x 200 221 



Fig. 3. Conosphcera platyconus, n. sp., . . . x 300 221 



Fig. 4. Conosphcera plagioconus, n. sp., . . . x 300 222 



Fig^ 5. Ethmosphcera conosiphonia, n. sp., . . x 400 69 

 Fig. 5a. Vertical section through the wall. 



Fig. 6. Ethmosphcera polysiphonia, n. sp., . . . x 400 70 



Fig. 7. Cenosphcera compacta, n. sp., . . . . x 300 65 



Fig. 8. Cenosphcera elysia, n. sp., . . . . x 300 64 

 Fig. 8. Vertical section through the wall 



Fig. 9. Cenosphcera mellifica, n. sp., . . . . x 300 62 



Fig. 10. Cenosphcera favosa, n. sp., . . . . x 300 62 

 Fig. 10. Vertical section through the wall 



Fig. 11. Cenosphcera vesparia, n. sp., . . . . . x 300 62 



Fig. 11 a. Vertical section through the wall. 



