Plate 45. 
Figs. 1 , 2. Schizoporella magniporosa , new species, (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. The aperture of the ancestrula is very large. 
Pleistocene: Mount Hope, Panama Canal Zone. 
Figs. 3, 4. Callopora guernei Jullien, 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 exhibiting an avieularium. 
Pleistocene: Mount Hope, Panama Canal Zone. 
Fig. 5. Callopora filum Jullien, 1903. (p. 42.) 
Zooecia, X 20. 
Pleistocene: Mount Hope, Panama Canal Zone. 
Fig. 6. Stylopoma projecta, new species, (p. 103.) 
Zooecia, X 20, of the incrusting zoarium, exhibiting the ovicell and the small oral avieularium 
characteristic of the species. 
Pleistocene: Mount Hope, Panama Canal Zone. 
Fig. 7. Dakaria chevereuxi Jullien, 1903. (p. 97.) 
Zooecia, X 20. 
Pleistocene: Mount Hope, Panama Canal Zone. 
Figs. 8, 9. Hippoporina pusilla, 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. Mastigophora pesanseris Smitt, 1873. (p. 172.) 
Zooecia, X 20. 
Pleistocene: Mount Hope, Panama Canal Zone. 
Fig. 11. Rhynchozoon levigatum, new species, (p. 157.) 
Zooecia of the incrusting zoarium, X 20. The salient globular ovicell and the spinule in the 
peristome are shown. 
Pleistocene: Mount Hope, Panama Canal Zone. 
Figs. 12, 13. Porella costulata, new species, (p. 150.) 
12. Zooecia of the incrusting zoarium, X 20, in the vicinity of the ancestrula. 
13. Normal zooecia, X 20, showing the large tremopores and prominent avicularian mucro. 
Pleistocene: Mount Hope, Panama Canal Zone. 
Fig. 14. Hippoporella costulata, 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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