﻿54 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 47 



Catheys limestone of the Trenton, Love branch, Maury 

 county, Tennessee. 



Lioclema punctatum ( Hall) p. 39 



7, 8. Vertical and tangential sections, X 20, exhibiting the normal 

 internal characters of the species. 

 9. Portion of figure 8, X 40, showing structure of walls and acan- 

 thopores. 



Keokuk formation, Keokuk, Iowa. 



Lioclema monroei new species p. 39 



10. Vertical section, X 20. 

 11, 12. Tangential section, X 20 and X 35. 



Hamilton formation, Bethany, New York. 



Plate XII 



Stigmatella personata new species p. 35 



Fig. 1. Tangential section, X 20, exhibiting the angular zocecia, compara- 

 tively few and small acanthopores, and almost total absence of 

 mesopores. 



2. A portion of the mature region of a vertical section, X 20, showing 



the usual disposition of the diaphragms. 



3. A zocecium of fig. 1, X 50, showing structure of walls and acan- 



thopores. 



Lower beds of the Richmond formation, Hanover, Ohio. 



Stigmatella interporosa new species p. 35 



4. Tangential section, X 20, showing among other characters the abun- 



dance of mesopores characterizing this species. 



5. Vertical section, X 20, showing the characters of the mature and im- 



mature regions. 



Lower beds of the Richmond formation, Hanover, Ohio. 



Lioclemella ohioensis ( Foerste) p. 39 



6. Portion of an average tangential section, X 20, exhibiting charac- 



ters deep in peripheral region. The zocecia may be distinguished 

 by having slightly thicker walls. 



7. Vertical section, X 20, showing the turn from the axial to the periph- 



eral region. 



8. Several zocecia of section of which fig. 6 represents another part, X 35. 



9. Portion of another tangential section, X 35, exhibiting an extremely 



aged development of acanthopores. 

 Clinton formation, Dayton, Ohio. 



. Implexopora filiosa ( D'Orbigny) p. 41 



10. Several zocecia, X 35, as seen in the usual tangential section. 



11. Tangential section of two zocecia, X 35, showing the full development 



of acanthopores and the characteristic dark median line. 

 Lorraine formation, Hamilton, Oh in. 



Plate XIII 



Amplexopora Columbiana new species p. 41 



Fig. 1. Tangential section, X 20, through a part of the zoarium where the 

 acanthopores are be^t developed. 



