Plate 5. 
Figs. 1-5. Acanthodesia savarti forma texturata Reuss, 1847. (See also pi. 46, figs. 8, 9.) (p. 32.) 
1. Fragments of the unilamellar, hollow cylindrical zoarium, natural size. 
2. Zooecia, X 20, with traces of delicate spines in the opesium. 
3. Inner side of zoarium, X 20, showing rectangular form of zooecia. 
4. Zooecia, X 20, with a distinct rim around the opesium. 
5. Another surface, X 20, showing the large size of the first zooecium of a new row. 
Lower Miocene (Bowden marl): Bowden, Jamaica. 
Fig. 6. Conopeum. ovale Canu and Bassler, 1919. (p. 26.) 
Ancestrular portion of the type specimen, X 20, incrusting a shell. The rare and irregular intero- 
pesial cavities, the entire, oval opesium and the flat mural rim are illustrated. 
Lower Miocene (Bowden marl): Bowden, Jamaica. 
Figs. 7-9. Gemelliporella punctata Canu and Bassler, 1919. (p. 111.) 
7. Two fragments of the free cylindrical zoarium, natural size. 
8. An example, X 20, showing the development of the tremocyst. 
9. Another fragment, X 20, exhibiting the form of the aperture, ovicells (broken) and arrange¬ 
ment of the areolae. 
Lower Miocene (Bowden marl): Bowden, Jamaica. 
Figs. 10-11. Membraniporina tenella Hincks, 1880. (p. 24.) 
10. The incrusting zoarium, X 20, illustrating the thin mural rim and the small tubercles on the 
gymnocyst. 
11. Another zoarium, X 20, with narrow zooecia. 
Lower Miocene (Bowden marl): Bowden, Jamaica. 
Fig. 12. Hemiseptella grandicella Canu and Bassler, 1919. (p. 71.) 
Surface of the incrusting zoarium, X 20. The largest zooecia commence a new row. 
Lower Miocene (Bowden marl): Bowden, Jamaica. 
Fig. 13. Rhamphostomella laticella Canu and Bassler, 1919. (p. 151.) 
The incrusting zoarium, X 20. The areolar costules are scarcely visible. 
Lower Miocene (Bowden marl): Bowden, Jamaica. 
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