Plate 114. 



FuiS. 1-lS. Plciiroitcu fcnestnita TUisk. 1S50 (p. 7G0i. • 



1 2 Reticulate zoaria, natui-al size and X 2. 

 ' 3. Anterior side of a zoarium, X 12, liaving laise torsjopores on tlie hasal lan>ella. 



4. Dorsal of the same zoariuiu, X 12, sliowing large tergopores. 



5. Dorsal of zoarium, X 12, having small tergopores and false sulci. 



6. Basal branch, X 12. The tergopores encroach on the frontal. 



-( Dorsal of the same specimen, X 12. The tergopores are small. 



S. Lateral face of a basal branch. X 12. sliowing the transverse section. 



9. Transverse section, X 25. 



10. Frontal of an ovicelled zoarium, X 12. The oeciopore is visible. 



11. Dorsal of the same zoarium, X 12. 



12. Basal branch with small frontal tergopores, X 12. 



13. Dor.sal of the same zoarium having small tergopores and false sulci, X 12. 

 14, 15. Frontal of a normal branch, X 12, and a portion, X 2.5. 



' le Lateral face of a branch, X 12, with frontal tergopores on lower part only. 



17. Dorsal of a zoarium, X 25, having tergopores with elongated orifices forming false 



sulci. 



18. Longitudinal thin section, X 25. The tergopores are rarely in the axis of the zooec.a 



but appear entangled. 

 ■ Lower Jacksonian (Moodys marl) : Jackson, Mississippi (figs. 1-4. 10-13, 1(.-18). 

 Clalbornian, one mile southeast of Rockville, Alabama (figs. .5-9, 14, 15). 

 Cat. Nos. 6526C, C52(l7, r.S.N.M. 



115 



