ri.ATE 132. 



Figs. 1-10. Idiiihlroiicu cultcr. new siiecies (p. 7S5). 



1. Two zoarial fragments, natural size. 



2. Portion of a fragment shown in figure 1, X 12. 



3. Lateral face of a branch, X 12. 



4. Dorsal showing the striations of the firmatopores, X 25. 



5. Longitudinal section showing branching of a stem, X 25. 



6. Longitudinal section through the extremity of a branch, X 25. 



7, S. 9. Transverse sections, X 25. ., , s. ok 



10. Tangential secth.n of the dorsal showing the spindles formed b.v the firmatopores, X 25. 

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



Cat. No. 6.5358, U.S.N.M. 

 Figs. 11-15. Idmidronca rosacea, new si)ecies (p. 7^1). 



11. Two zoaria, natural size. 



12. Profile of the same specimens, X 2, showing development of branches on a stem. 



13. Top view of the same, X 2. 



14. Celluliferous surface, X 12, exhibiting fascicles with only 2 or 3 zooecia. 

 15 Abraded dorsal showing the firmatopores. X 25. 



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



Cat. No. 65359, U.S.N.M. 



133 



