Plate 136. 



Figs. 1-12. lihnonea mUneana D'Orbigny, 1839 (p. 773). 



1. Fragments of the bifurcated compressed zoarium, natural size. 



2. Lateral view of a brancli, X 12. • 



3. A wide zoarium, X 12. 



4. A narrow zoarium, X 12. 



5. Dorsal side, X 12, sliowing convex striations much accentuated. 



6. View of dorsal, X 12, sliowing longitudinal and transverse striations. 



7. Surface of specimen (fig. 3), X 2.5. 



S. Tangential section of the frontal. X 100. 

 9. Tangential section of the dorsal, X 100. 

 10, 11. Transverse sections, X 2.5. 



12. Tangential section of the dorsal, X 25, after removal of the basal lamella. 

 Middle Jacl^sonian (Castle Hayne limestone) : Wilmington, North Carolina. 



Cat. No. 65351, U.S.N.M. 

 Figs. 1.3-23. Iduxmrn iiinfjnirercrsii. new species (p. 776K 



13. Zoarial fragments, natural size. 



14. Lateral view of a branch. X 12. 



15. Frontal view, X 12. 



16. Terminal branch, X 12, preserving the zone of growtli. 



17. Usual transverse section, X 25. 



18. Transverse sections at different heights, X 12. 



19. Tangential section of the dorsal after removal of the basal lamella, X 25. 



20. Tangential section of the liasal lamella. X 100. 



21. Longitudinal thin section, X 25. 



22. Dorsal side of branch. X 25, showing tubes. 



23. Lateral view of branch, X 25. 



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

 Cat. No. 653.52, U.g.N.M. 

 55899— 20— Bull. 106, Vol. 2 18 1^7 



