Plate 149. 



Fig. 1-14. Trctociicloecia reticulata, uew species (p. 827 i. 



1. Fragments of the free solid reticulate zoarium. natural size. 



2. .Surface of a zoarium with ovicell, X 12. The ovicell is fr.igile, little globular. 



3. Surface of a zoarium, X 12. The zooecial orifices are. grouped In incomplete zones 



separated l).v zones of niesopores. 



4. Surface. X 12. with broken ovicell in the middle to the left. The ovicell is of little 



depth and is perforated by all the tubes. 



5. Same surface a.s figure 3, X 2.5. Some niesopores are closed. 



6. Surface, X 12, with many mesopores closed by a fragile calcareous lamella. 



7. Another variation, X 12, with mesopores often closed by a lamella. 

 S. Surface, X 12, showing niesopores grouped iu irregular zones. 



9. Same zoarium as figure S, X 2.5. 



10. Transver.se thin section, X 12. 



11. Longitudinal thin section, X 12. The separation between the two axial tubes of 



ramification occurred near the base of the cylindrical branch. 



12. Longitudinal thin section, X 25. The walls of the mesopores are vesicular. 

 13, 14. Tangential thin section, X 2.5, and X 100. 



lliddle Jacksonlan : Eutaw Springs. South Carolina. 

 Cat. Xo. 0.5374, U.S.N.M. 

 150 



