Plate IBS. 



Figs. 1-20. Ulmonea yraUutor, new species (p. 777). 



1. Fragments of the small, linear, bifurcated zoarimn, imtural size. 



2. An ovicelled zoariuni, X 12. 



3. A branch with salient and divergent fascicles, X 12. 



Middle .Tacksonian (Castle Hayne limestone) : Wilmington, Nort^i Carolina. 

 Cat. No. (!.")414, U.S.X.:\[. 



4. An ovicelled branch, X 12. 



Vicksburgian (Marianna limestone 1 : One mile nortli of Monroeville, .\labama. 

 Cat. No. 65415, U.S.N.SI. 

 5, 6. Dor.sal and frontal of a branch, X 25. 



Vicksburgian (Marianna limestone) : Near Claiborne, Monroe County, Alabama. 

 Cat. No. 65416, U.S.N.M. 

 7. Branching fragment, X 12, with broken fascicles. 

 8, 9. Dorsal side of two branches, X 12, with convex striations. Branch conv(>x above. 

 10. Lateral face of a branch with salient fascicles, X 12. 



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

 Cat. No. 65414, U.S.N.M. 

 11, 12. Lntcral and frontal views, X12, of an ovicelled branch. The oeciostome is preserved. 

 Vicksburgian (Marianna limestone) : Near Claiborne, Monroe County, Alabama. 

 Cat. No. 65416, U.S.N.M. 



13. Lateral face, X 12, with fascicles broken. 



Vicksburgian (Marianna limestone) : One mile north of Monroeville, Alabama. 

 Cat. No. 65415, U.S.N.M. 



14. An inferior branch, X 25, showing convex dorsal striated longitudinally by the tubes. 



15. Thin section through a radicell, X 25. 



16. Longitudinal thin section, X 25. 

 17, IS. Transver.se sections, X 25. 



19. Zoarial base, X 2, provided with radieells for support. 



20. Zoarial fragment, X 6. showing radieells of consolidation. 



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

 Cat. No. 65414, U.S.N.M. 

 Figs. 21-23. lOiiionea puntila, new species (p. 7S0). 



21, 22. Frontal and dorsal of the very small free linear zoariuni, natural size and X 12. 



23. Frontal, X 25. 



Middle Jacksonian : One and eight-tenths miles west of Wrightsville, Georgia. 

 Cat. No. 65417, U.S.N.M. 

 Figs. 24-27. Idiiionea fitiforniis, new species (p. 781). 



24. Fragments of the long, linear zoarium, natural size. 



25. Frontal, X 12, showing alternate fascicles composed of two zooeeia only. 

 26, 27. Dorsal and lateral views of a branch, X 12. 



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

 Cat. No. 6541S, U.S.N.M. 



139 



