PLATE 99. 



CHALLENGERIDA. 



Fig- 

 Fig. 

 Fig. 



2. 

 3. 

 4. 



(The central capsule is coloured red and the phaeodium green in Figs. 1, 6, 10, 



Fig. 1. Challengeria murrayi, n. sp., 



From the dorsal side. Numerous streams of sarcode arise from the central 

 capsule and pierce the calymma inside the shell. 



Challengeria wildi, n. sp., 

 The peristome from the left side. 



Challengeria bromleyi, n. sp., 

 From the dorsal side. 



Challengeria sloggettii, John Murray, 



The ventral corner broken off. From the left side. 

 Fig. 4o. Vertical section through the shell-wall. 



Fig. 5. Challengeria tritonis, n. sp., 



Fig. 6. Challengeron diodon, n. sp., .... 



From the dorsal side. The shell contains two central capsules. 



Fig. 7. Challengeron pear ceyi, n. sp., 



From the dorsal side. 



Fig. 8. Challengeron richardsii, n. sp., 

 From the oral margin. 



Fig. 9. Challengeron fergusoni, n. sp., 



From the right side. 



Fig. 10. dtallengeron triangulum, n. sp., 



From the right side. 



Fig. 11. Challengeron crosbiei, n. sp., 

 From the ventral side. 



Fig. 12. Challengeron buchanani, n. sp., 

 From the right side. 



Fig. 13. Challengeron willemoesii, n. sp., 

 From the ventral side. 



Fig. 14. Challengeron moseleyi, n. sp., . 



From the right side. 



Fig. 15. Challengeron wyvillei, n. sp., . 



From the left side. 



Fig. 16. Porcupinia cordiformis, n. sp., 

 From the right side. 



Fig. 17. Pharyngella gastrsea, n. sp., 

 Fig. 18. Pharyngella gastrula, n. sp., . 



Fig. 19. Entocannula infundibulum, n. sp., . 

 Fig. 20. Entocannula hirsuta, n. sp., 



Fig. 21. Lithogromia diatomacea, n. sp., . 



A piece of the shell with diatomaceous structure. 

 Fig. 'Jin. Vertical section through the shell-wall. 



Fig. 22. Lithogromia silicea, n. sp., . 



x 150 



1647 



