PLATE 36. 



COCCODISCIDA. 



Diam. Page 

 Fig. 1. Coccodiscus lamarckii, n. sp., . . . . . x 500 459 



The left half of the figure represents a horizontal section through the 

 peripheral shell, the right half a view of the surface. 



Fig. 2. Coccodiscus gosthei, n. sp., . . . . . x 500 461 



Vertical section nearly through the centre. 



Fig. 3. Lithocyclia lenticida, n. sp., 



Fig. 4. Lithocyclia lenticula, n. sp., 



Vertical section through the centre. 



Fig. 5. Coccocyclia helianthus, n. sp., 



Fig. 6. Coccocyclia helianthus, n. sp., 



Vertical section through the outer medullary shell, showing the inner. 



Fig. 7. Astrocyclia solaster, n. sp., 



Fig. 8. Astrocyclia heterocycla, n. sp., . 



Horizontal section through the equatorial plane. 



X 



400 



459 



X 



400 



459 



X 



400 



468 



X 



500 



468 



X 



300 



466 



X 



400 



468 



