Plate loo. 



Figs. 1-0. Desiin-ii'nuUicihi tiniiis IJeuss, ISO!) (p. 721). 

 1. Tlie free discoidal zoai'iuni, natural size. 

 -, 3. Cellular or anterior side of two zoaria, X G. 



4. Posterior side, X 6. 



o. A largo ovicelled zoariuni, X 6. 

 C. Surface of a zoariuni, X 2o. 



Alrksliurgian i Jlarianna limestone) : one mile iKO-tli of Mcinroeville, Alal)an\a. 

 Cal. No. (jo4o9. T.S.X.:\I. 

 Fi(is. 7-lT. Crisuliiiorti i/iaiidiiiorti. new species ( [i. ToUi. 

 7. Basal segments of the species, natural size. 



5. Posterior face, X 25. 

 9. Anterior face, X 25. 



10. Longitudinal tliin .section showing the great length of the tubes, X 12. 



11. Longitudinal tlun section showing the growth of a new tube. X 12. 

 Vicl<si)urgian (Marianna limestone): West hank Cimeculi Uiver, Escanibia (!'ount.v, 



Alabama. 



• 'at. No. 05460, U.8.N.M. 

 Fi(iS. 12-17. I'liiijioevia (Uscoiden, new species (p. 717). 



12. Tlie free orbicular zoariuni, natural size. 



13, 14. Anterior face of a large and a small zoariuni. X 12. 



15. Lower face showing the concentric wrinkles nf the basal lamella, X 12. 



16. View of the basal lamella after ablation, slaiwing the lozenge-shaped areas formed by 



the horizontal pro.iection of the tubes in .iuxtaposition. X 25. 



17. Median tliiii section, X 25. 



Vicksburgian l Marianna limestone) : One mile inn-tb of .Aliiiiroeville, .\lab;ima. 

 Cat. No. 65461, U.S.N.II. 

 Figs. 18-22. Heri/iiocciu coiiiprctifiu, new species (p. 72'.) i. 



18. The flattened zoaiial branches, natural .size. 



19, 20. Lamellar specimen emitting a cylindrical branch, X 12, and a portion, X 25. 



21. Lamellar specimen irregularly branched ami siihcylindrieal at the base. X 12 . 



22. Ovicelled example, X 12, with the oeciostome little salient. 

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



Cat. No. 65462. T'.S.N.:\I. 

 Figs. 2.3-211. ilcriiiinrcin ch/iiiifitotiilin. new species (p. 732). 



23. The small bifurcated branches, natural size. 



24. A claviform fragment showing the curious mode of branching. X 12. 

 25, 26. A .slender, long branch with striated tubes, X 25 and X 12. 



27, 28. The most frequent as[iect of the species, X 25 and X 12. 



29. A clavit'iii-m branching fragment. X 12. 



Vicksburgian I Ued P.liilf clay) : Seven and one-half miles southwest of Bladon Springs, 

 .\labama. 



Cat. No. 65463, U.S.N.M. 

 Figs. 3o-30. Mcfiiiiorcid eiiitiutu. new species (p. 733). 



30. The cylindrical bifurcated branches, natural size. 



31. Normal bifurcated specimen. X 12. sliowing the cliib-slinpi'd lubes. 



32. Fragment, X 12, exhiliiting the elongate ovicell. 



33. Surface of branch, X 25. 



34. Longitudinal thiu section, X 25. 



35. Transverse section through a branch, X 25. 



36. Transverse section taken .iust before a bifurcation, X 25. 



Vicksburgian (JIarianna limestone) : One mile mirtli (if Miniroeville, Alabama. 

 Cat. No. 65404. T'.S.N.JL 

 156 



