PLATE 9. 







PYLONIDA. 



Diam. Page 



Fig. 1. Monozonium alatum, n. sp., . . . . x 300 633 



Dorsal view. 

 Fig. la. Apical view. 



Fig. 2. Dizonium pleumcanthum, n, sp., . . x 400 63(5 



Fig. 3. Dizonium stauracanthum, n. sp., . x 300 636 



Fig. 4. Tnzonium tncinctum, n. sp., . . x 300 637 



Dorsal view. 

 Fig. 4<z. Lateral view. 

 Fig. 46. Apical view. 



Fig. 5. Amphipyle tetraceros, n. sp., . . . x 400 642 



Dorsal view. 



Fig. 6. Amphipyle callizona, n. sp., . . . x 300 644 



Dorsal view. 



Fi,u. 7. Amphipyle amphiptera, n. sp., . . x . 300 642 



. Dorsal view. 

 Fig. 7a. Lateral view. 



Fig. 8. Tetrapyle circular-is, n. sp., . . x 300 645 



Dorsal view. 



Fig. 9. Tetrapyle pleuracantha, n. sp., x 400 646 



Dorsal view. The lentelliptical central capsule is visible between medullary 

 and cortical shell 



Fig. 10. Tetrapyle tnrrita, n. sp., . . . x 400 649 



Oblique view, half dorsal, half lateral. 



Fig. 11. Octopyle stenozona, n. sp., ... x 400 652 



Dorsal view. 



Fig. 12. Octopyle sexangulata, n. sp., ... x 300 653 



Dorsal view. 



Fig. 13. Octopyle decastyk, n. sp., . . x 300 654 



Dorsal view. 

 Fig. 13a. Lateral view. 



Fig. 14. Pylonium quadncorne, n. sp., . . x 400 655 



Dorsal view. 



Fig. 15. Tetrapylonium quadrangulare, 11. sj)., x 390 658 



Dorsal view. 



Fig. 16. Pylozonium octacanthum, n. sp., . x 300 6(i() 



Dorsal view. 





