Plate 46. 

 Fig. 1. Holopordla turrtla Smitt, 1873. (p. 179.) 



The fossil example, X 20, referred to this recent species. 



Pleistocene: Mount Hope, Panama Canal Zone. 

 Fig. 2. HoloporcUa avicalifeni, new species, (p. 179.) 



A portion of the incrusting zoarium, X 20. A small avicularium in the peristome is visible. 



Pleistocene: Mount Hope, Panama Canal Zone. 

 Figs. 3-6. Cydkopom multilamellosa, new species, (p. 13S.) 



3. Surface of the free orbicular zoarium, X 20, illustrating the form of the zooecia and ovicell. 



4. Zooecia X 20, with a large transverse avicularium. 



5. Ordinary zooecia, X 20. 



6. Interior of zooecia, X 20. The tremocyst is visible through the very thin olocyst. 

 Pleistocene Mount Hope, Panama Canal Zone. 



Fig. 7. Holoporella mucronata, new species, (p. 179.) 



The incrusting zoarium, X 20, illustrating the large areolar pores and prominent oral mucro. 



Pleistocene: Mount Hope, Panama Canal Zone. 

 Figs. 8, 9. Acanthodcsia savartii forma texhirata Reuss, 18-47. (See also pi. 5, figs. 1-5.) (p. 32.) 



Surface of two small unilamellar examples, X 20. 



Pleistocene: Vero, Florida. 

 Fig. 10. Hcmiseptella iiiberosa, new species, (p. 71.) 



The incrusting zoarium, X 20, showing the irregular inferior border of the opesium. 



Pleistocene; Simmons Bluff, Yonges Island, Charleston County, South Carolina. 

 Figs. 11, 12. Memhranipora oshurni, new species, (p. 24.) 



11. The incrusting zoarium, X 20, illustrating the thin, rounded mural rim, the tubercles, and 

 the small, concave proximal cryptocyst. 



Pleistocene: Mount Hope, Panama Canal Zone. 



12. Ancestrular region of a zoarium, X 20, referred to this species. 

 Miocene (Bowden marl): Bowden, Jamaica. 



Fig. 13. Tercbripora padfica, new species, (p. 15.) 



The type specimen, X 10, showing the small pyriform zooecia separated by one to two times their 

 length. 



Pleistocene: Santa Barbara, California. 

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