Plate 1h\. 



Figs. 1-C. rartrutoci/clocciu poromi . nfw sriecies (]). Soil. 



1. Surface of the nia.ssive zoanuin, X 12. slidwing tlie ovieell. The broken upper wall 



permit.s a view of the interior. 

 •_'. Surface. X 12, sliowini; tlie elliptical form of the oritices and the pol.vgonal shape of 

 the inesopores. 



3. Same zoariinii as figure 2, X 2.5. 



4. Transverse thin section, X 50. 



5. Tangential thin .section, X 50. 

 0. Longitudinal thin .section, X 50. 



Middle Jacksonian: Eutaw Springs. South Carolina. 

 Cat. No. 6536S, V.S.N.M. 

 Figs. 7-10. Ceriopora ? proposHn. new species (p. 070). 



7. View of tlie zoarium, natural size, showing tlie expande<l ii'regular form. 

 S. Surface, X 25, illustrating the pol.vgonal oritiees. 

 9. Transverse thin section, X 12. 



10. Longitudinal thin section, X 12, consisting of two superposed la.vers separated by a 



line of large ve.scicles. 

 Sliddle Jack.sonian : Three and a quarter miles south of Perry, Georgia. 

 Cat. No. 658G9, U.S.N.M. 

 Fifis. 11-17. Ceriopora nlilriclii. new species (p. 670). 



11. The small cylindrical zoarium, natural size. 



12. The same specimen. X 12. 



13. A zoarium, X 12, attached to a bryozoan and growing into a solid stem. 



14. Transverse thin section, X 25. 



15. Transverse .section, X 20, of a solid branch. 

 10. Surface of specimen (tig. 12), X 25. 



17. Longitudinal thin section, X 25. 



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

 Cat. No. G.5370, r.S.N.M. 



152 



