PLATE 37. 



COCCODISCIDA. 



- Diam. Page 



Fig. 1. Staurocyclia cruciata, n. sp., . . . . x 400 465 



Fig. 2. Staurocyclia phacostaurus, n. sp., . . . x 300 465 



Fig. 3. Staurocyclia phacostaurus, n. sp., . . . x 300 465 



Vertical section through the centre. 



Fig. 4. Staurocyclia magniducis, n. sp. (Coccostaurus magniducis), . x 300 466 



Fig. 5. Trigonocyclia triangularis, n. sp., . . . . x 400 464 



Fig. 6. Stylocyclia prionacantha, n. sp., . . . . x 500 462 



A great part of the peripheral shell is removed. 



Fig. 7. Amphivyclia amphistyla, n. sp., . . . . x 300 464 



Vertical section through the centre- 

 Fig. 8. Stylocyclia excavata, n. sp., . . . . x 200 463 



Vertical section through the centre. 



