Plate 110. 



Figs. 1-5. Ascosoccki ? (Zonoimni) iiliichi, new species (p. S3G). 



1. The solid cylindrical zoariuin, X 2. 



2. Surface, X 25, exhibiting the zones of nicsopoi-es. 



3. The same zoarium, X 12. 



4. Longitudinal thin section, X 12. The walls «f the niesopores are vesicular. 



5. Transverse thin .section, X 2.". 



5Ii<lwayan ( Cla.vton linieslonet : llalielvale, near l.iltle Rock, Arkansas. 

 Cat. No. 65261, U.S.N.JI. 

 Pigs. G-15. Pniuscnuorcin consiiiiiJif! T'lrich, 1882 (p. 840). 



6. Examples of the hollow cylindrical zoarium, natural size. 



7. Ovicelled zoarium, X 12. 



8. Branching fragment, X 12, well preserved with salient peristomes. 



9. Somewhat worn zoariuin, X 12, exhibiting the usual aspect of specimens. 



10. Surface of specimen shown in figure 8, X 25. 



11. Surface of worn example (fig. 9), X 2.5. 



12. Tangential thin section. X 20. 



13. Transverse thin section, X V2, through a branch containing two longitudinal cavities. 



14. Transver.se thin section, X 25. 



15. Longitudinal thin section, X 25. 



Jlidwayan (Clayton limestone): Mabelvale, near Little Rock, Arkansas; one mile 

 west of Fort Gaines, Georgia (figs. 9, 11). 

 Cat. No's. 65262, 6.5263, U.S.N.M. 



Ill 



