Plate 113. 



Figs. 1-5. Entalophora crassa, new species (p. 735). 



1, 2. The thick, branched zoarium, natural size and X 12. 



3. Portion of the surface, X 25. 



4. Longitudinal thin section, X 25. 



5. Transverse thin section, X 25, showing polygonal tubes. 



Claibornian (Gosport sand) : One mile southwest of Rockville, Clarke County, Alabama. 

 Oat. No. 65431, U.S.N.M. 

 Figs. 6-1.5. PJeuronea subpertiisa, new species (p. 767). 



6. Zoarial fragments, natural size. 



7. Lateral face of a zoarium, X 12. showing oblique fascicles. 



8. Frontal of another specimen, X 12. 



9. Dorsal of a zoarium, X 12, illustrating the large tergopores. 



10. Broken branch, X 32, showing that the dorsal composed of tergopores separates 



easily from the polypidian tubes. 



11. Tangential thin section, X 25. The tergopores are polygonal and the interstices are 



not calcified. 



12. Another tangential section, X 25, in wliich the interstices between the tergopores are 



calcified. 

 13, 14. Trans\'er.sal section, X 25. 



15. Longitudinal section, X 25. The tergopores are .short, but well marked and occur at 



all heights. 

 Lower Jacksonian (Moodys marl) : Jackson, Mississippi. 

 Cat. No. 65432, U.S.N.M. 

 Figs. 16-18. Ileteropora niiiocna De Gregorio. 1S90 (p. 68:3). 



16. Zoarium with its numerous apophyses, X 5. 



17. Surface of the zoarium, X 20. 



18. Transverse section cutting an apophysis, X 20. 



Lower Jacksonian (Moodys marl) : Jackson, Mississippi. 

 Cat. No. 65433, U.S.N.M. 

 114 



