Plate D. 



Figs. 1-7. Coiiupciiiti icllc<i.iiuiikiiin, now .siX'cies (p. SS). 



1. Natural size view of a bushy bilamellate zoariuin. 



2. Surface of a zoariuui with young zooecia. X 20. Several regenerated zooecia with 



a thin double mural rim are visible. 



3. Portion of a zoarium with narrow zooecia, X 20. 



4. Another zoarium, X 20, with broad zooecia, distinct interoiJesial cavities and two 



distal impressions shown in some of the opesia. 



5. An example, X 20. in which the mural rims are grauulatetl. Regenerated zooecia 



are also developed. 



6. View, X 20, showing ancestrular region. 



7. Surface of a bllamellar zoarium, X 20. The distal imi)ressions are shown in several 



opesia. 

 Wilcoxian ( Baslii formation) : Woods Bluff, Alabama. 

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

 Figs. S. 0. Conopeum tiiniilior, new species (p. 88). 



S. The incrusting zoarium, X 20. Calcitied zooecia with a linear orifice and a semi- 

 lunar distal furrow are shown. 

 9. Another zoarium, X 20, exhibiting the furrow separating the zooecia and the finely 

 crenulated opesium. 

 Wilcoxian (Basbi formation) : Woods Blnff, Alabama. 

 Cat. No. 63S32, U.S.N.M. 

 Fill. 10. Alilcrina nodulosa. new species (p. 143). 



Surface of the free unilamellar zoarium, X 20. The two nodular pi-ojections and 



the arrangement of the septulae are quite visible. 

 Wilcoxian (Bashi formation): Woods Bluff, Alabama. 

 Cat. No. C.3S33, T'.S.N.M. 

 Figs. 11-12. LuiiuUiria ovuta, new species (p. 241). 



11. Celluliferous side of a zoarium, X 20, exhibiting the rows of hydrostatic and of 



polypidian zooecia. Ovicells are developed on two of the zooecia. 



12. Inner side of a zoarium, X 20, showing the many tuberosities of this surface. 

 Wilcoxian (Bashi formation) : Woods Bluff, Alabama. 



Cat. No. 63834, U.S.N.M. 

 Figs. 13-16. Aimidosia cJavula, new species (p. 42!)). 



13. The incrusting zoarium, X 20, in which the areolae are larger than usual. 



14. Zooecia, X 2<i. with the ovicell well developed and the frontal avicutarium farther 



reujoved from the aperture. 



15. Another example, X 20. with the pleurocyst developed. 



16. An example, X 20, in which the ovicell is broader than the zooecium. 

 Wilcoxian (Bashi formation) : Woods Bluff, Alabama. 



Cat. No. 63835, U.S.N.M. 

 Fig. 17. TiinHixtctia elontiata, new species (p. 32S). 

 The incrusting zoarium, X 20. 



Wilcoxian (Bashi formation) : Woods Bluff, Alabama. 

 Cat. No. 63836, U.S.N.M. 

 10 



