PLATE I. 



^ 



Fig. 

 ^'^ Figs. 

 Fig. 

 Fig. 

 Fig- 



Fig. 7. 

 Vis. 8. 



Fig. 

 Fig. 



Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 



9. 

 10. 



11. 

 12. 

 13. 

 14. 

 15. 

 16. 

 17. 

 18. 

 I'J. 

 20. 

 21. 

 22. 

 23. 

 24, 

 25. 



Catenaria hicomis. Busk, ....... 



3. Farciminaria hiseriata, n. sp., ...... 



Ichthyaria oculata. Busk ; the lower part shows the lateral chitinous growth, 



Section of Cahcellia sindairii, Busk ; showing the membrane dividing the zocecia 



Bifaxaria suhmucronata, Busk ; the lower part is calcined, the upper part showing the 

 ovicells is not, ....... 



Bifaxaria rorrwjata, Busk ; showing the ovicells and avicularia as seen laterally, 



Bifaxaria corrwjata, Busk ; ovicell from the front, .... 



Flustra sejjarafa, n. sp. ; the left hand avicularium is shown open, the right closed 



Flustra crihriformis, Busk ; showing the radical attachment, and from the cells on the riglit 

 the upper wall has been removed to show the basal wall, 



Crilirilina latimarginata, Bu.sk, 



Crihrilina latiriiarginaia, Busk ; base of vibraculuni, 



Eledra cylindracea, Busk, .... 



Eledra cylindrucna, Busk ; transverse section, 



Thalamnporella sier/ano] /oroides, Goldstein ; calcined, 



Aspidostoma fji'jantea, Busk ; cervicorne processes seen from the side 



Aspidostoiua gigantea, Busk, 



Aspidostoma gigantea, Busk, 



Porina protio'^ddta, i\. sp. ; anterior surface, 



Purina prohosddea, n. sp. ; dorsal surface, . 



Memhranipjora umhoiata, Busk, var.. 



Section of Turritig'ira stellata, Busk ; showing the ovicells, 



Thalamopordla lahiata. Busk ; calcined, 



Mucronella contorta, Busk, .... 



Turritigera stellata. Busk, 



Diam. 



X 85 



X 25 



X 25 



X 25 



X 12 



X 25 



X 25 



X 25 



X 12 



X 25 



X 150 



X 25 



X 25 



X 25 



X 

 X 



X 



X 

 X 

 X 

 X 

 X 

 X 



12 

 25 

 25 

 12 

 25 

 25 

 25 

 25 

 25 



