Plate 45. 



Figs. 1, 2. Scliizoporella magniporosa, new spccief!. (p. 95.") 



1. View of the incrusting zoarium, X 20, showing the hexagonal zooecia with large tremopores. 



2. Ancestrular portion of a zoarium, X 20. Theapertureof the ancestrula is very large. 

 Pleistocene : Mount Hope, Panama Canal Zone. 



Figs. 3, 4. Ciillopora guernei JuUien, 1903. (p. 42.) 



3. Several marginal zooecia, X 20, of a zoarium incrusting a coral. 



4. Zooecia, X 20, in the vicinity of the ancestrula and exhiliiting an aviculariuni. 

 Pleistocene: Mount Hope, Panama Canal Zone. 



Fig. 5. Callopord /Hum .luWum, 190'i. (p. 42.) 



Zooecia, X 20. 



Pleistocene: Mount Hope, Panama Canal Zone. 

 Fig. 6. Slyloponm jyrojectri, new species, (p. 103.) 



Zooecia, X 20, of the incrusting zoarium, exhibiting the ovicell and the small oral aWcularium 

 characteristic of the species. 



Pleistocene: Mount Hope, Panama Canal Zone. 

 Fig. 7. Dakaria cte'«"<;«;r:i Jullien, 1903. (p. 97.) 



Zooecia, X 20. 



Pleistocene: Mount Hojje, Panama Canal Zone. 

 Figs. 8, 9. ITippoporina pusilhi, new species, (p. 129.) 



8. The incrusting zoarium, X 20, with ovicelled and badly oriented zooecia. 



9. Zoarium, X 20, showing the ancestrula and ancestrular zooecia. 

 Pleistocene; Mount Hope, Panama Canal Zone. 



Fig. 10. Musiigophorn jxsanseris Smitt, 1873. (p. 172.) 



Zooecia, X 20. 



Pleistocene: Mount Hope, Panama Canal Zone. 

 Fig. 11. lihynchozoon levigatum, new species, (p. 157.) 



Zooecia of the incrusting zoarium, X 20. TIic salient globular ovicell and the spinule in the 

 peristome are shown. 



Pleistocene: Mount Hope, Panama Canal Zone. 

 Figs. 12, 13. I'orella costidatn, new species, (p. 150.) 



12. Zooecia of the incrusting zoarium, X 20, in the vicinity of tlie ancestrula. 



13. Normal zooecia, X 20, showing the large tremopores and prominent avicularian mucro. 

 Pleistocene: Mount Hope, Panama Canal Zone. 



Fig. 14. Hippoporella costvlala, new species, (p. 133.) 



Portion of the incrusting zoarium, X 20, with zooecia exhibiting areolar pores and costules. 

 Pleistocene: Mount Hope, Panama Canal Zone. 



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