PLATE 32. 



Phacodiscida. 



Fig. 1. Astrophacus Solaris, n. sp., . 

 Fig. 2. Astrophacus apollinis, n. sp., 



Fig. 3. Astrophacus phacodiscus, n. sp., 



Vertical section through the centrum. 



Fig. 4. Astrosestrum ephyra, n. sp., 



Fig. 4a. Transverse section through the double medullary shell, . 



Fig. 5. Astrosestrum nauphanta, n. sp., 



Fig. 6. Phacostylus caudatus, n. sp. (vel Astrosestrum caudatum), 



Fig. 7. Perizona scutella, n. sp., 



Fig. 8. Perizona pterygota, n. sp., 



Fig. 8a. Medullary shells and radial beams connecting them with the disk, 



Diam. Page 



x 300 453 



x 300 455 



x 300 454 



x 300 442 



x 300 442 



x 300 442 



x 200 431 



x 400 427 



x 400 427 



x 300 427 



