Plate 69. 



Figs. 1-5. CheUfipnra spccuhi. new species (p. 531). 



1. Ordinary zooeeia of tlie incrusting zoariuni. X 10. witli tlie tubular avicularia well 



developed. 



2. Portion of fig. 5. X 20, showing the extraordinary development of the pei'istouie. 



3. Zoarial surface, X 10, showing several closed zooeeia, 



4. Portion of a zoarium, X 20. Two of the zooeeia are ovieelled. 



5. Zoarium, X 10. 



Middle Jacksonian (Castle Hayne limestone) : Wilmington, North Carolina. 

 Cat. No. 64178, U.S.N.M. 

 Fig. G. Cheilopora transrersri, new sijecies (p. 520). 



Surface of the bilamellar zoarium, X 20. The transverse aperture is quite evident, 



while that of the ovieelled zooeeia is distinctly larger. 

 Middle Jacksonian (Castle Hayne limestone) : Wilmington, North C.'irolina, 

 Cat. No. 64179, U.S.N.M. 

 Figs. 7, S. Cheilopora snlcifera, new species (p. 531). 



7. Surface of the unilamellar creeping zoarium. X 20, with the tremopores appearing 



like sulci. 

 S. Another zoarium, X 20, with elongated zooeeia. 



Middle Jacksonian (Castle Ha.vne limestone) : Wilmington, North Carolina. 

 Cat. No. 641 SO, U.S.N.M. 

 Figs. 0-14. HippopoOiiia ribraciilifera Canu and Bassler, 1917 (p. 5.32). 



9, 10. Two longitudinal fractures, X 20, illustrating occurrence of the seiitulae. 



11. Drawing, X 20, of a longitudinal section. 



or, ovicell; s, septulae: v, vibraculum ; z, zooecium. 



12. Ordinary zooeeia of the bilamellar zoarium, X 20. Three of the zooeeia show the 



tremocyst separated from the olocyst. 



13. Interior of zooeeia, X 20. 



14. Ordinary and ovieelled zooeeia, X 20. Four zooeeia are closed by a finely perforated 



operculum. 

 Middle Jacksonian (Castle Hayne limestone) : Wilmington, North Carolina. 

 Cat. No. 62004, U.S.N.M. 

 Fig. 15. Wdtcrsipom ? rrccta. new species (p. 538). 

 The free, erect bifoliate zoarium, X 20. 

 Upper Jacksonian (Ocala limestone) : Alachua. Florida. 

 Cat. No. 641,S1, U.S.N.M. 

 70 



