Plate 140. 



Figs. 1-13. Idmonca allatitica Jolinston, 1847 (p. 778). 



1. A group of the linear bifiircateci branches, natural size. 



2. A branch, X 12, with quite divergent fascicles. 



3. Portion of the same, X 25. 



4. Side view of a branch, X 12, round at the base and flat above. 



5. Lateral view of the celluliferous side, X 12. 



6. Fragment, X 12, showing aspect where fascicles are broken. 

 7, 8. Dorsal of a branch, X 12 and X 25. 



9. Example, X 25, with convex dorsal and tubes visible. 



10. Example with a short radicell, X 12. 



11. Lougitudinal thin section, X 25. 



12. Tangential thin section of the dorsal, X 25, showing the spindle-shaped areas just 



above the basal lamella. 



13. Transverse section, X 25. 



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

 Cat. No. 65353, U.S.N.M. 

 Figs. 14-21. Tenia Uiiiiida Smitt, 1S71 (p. 700). 



14. Zoarial fragments, natural size. 



15. A branch. X 12, with salient fascicles. 

 IC. Portion of the same branch, X 25. 



17. Lateral view of a branch, X 12. 



18. Dorsal side of the zoariuni, X 12. 



19. Usual aspect of the species, X 12, showing worn fascicles. 

 20 "1 Fmntal and dorsal sides of an ovicelled example, X 12. 



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



Cat. No. 65354, TT.S.N.M. 



141 



