Plate 76. 



Fitis. 1-(i, IliiliiiKiii Ihi /insiirdlii, iii'w species (p. (iOr>K 



1. Two examples of the small globular zoariuni, natural size. 



2. Ovicelled zooeeia, of a zoariuni incrusting a shell, X 20, with the fts.suro in Ihe 



ovicell quite visible. 



3. Another view of the same zoarium, X 20. 



4. Marginal zooeeia of the same zoarium, X 20. The zooeeia are oriontetl anil the 



areolae are visible. 



5. Another portion of the zoarium, X 20. The ovirells arc broUen. Several incom- 



plete Z(ioccin are shown. 

 Lower Jacksonian (Moodys niarll : Jackson, Mississippi. 

 Cat. No. 642:6. TI.S.N.M. 



6. The Mcksburgian form of tlie species. X 20. 



Vicksburgian fMarianua limestone) : Mni'iler Creek, east of Castlebnry, Alabama. 

 Cat. No. 64217. TT.S.N.M. 

 FuiS. 7-10. Iloloitorrlld iiiimiiKii-ii, new si)ecics tp. OlOi. 



7. The free, globular zooecium, natural size. 



8. Usual aspect of the zooeeia. X 20, with tlie salient beak (juite visible. 



9. Surface of zoarium, X 20. with several incomplete zooeeia. 



10. Zooeeia, X 20, illustrating the minute apertura. the smooth frontal, and the salient 



beak. 

 Upper Jacksonian (Ocala liuiestoue) : One anil one-half miles above Bainbridge, 

 Georgia. 



Cat. No. 64218, U.S.N.M. 

 Fk;s. 11, 12. Holoporelln crassicoUis, new species (p. 007). 



11. The unilamellar incrusting zoarium, natural size. 



12. Surface of the same specimen, X 20. The thick salient peristome is quite evident. 

 Middle Jacksonian (Castle Hayne limestone) : Wilmington, North Carolina. 



Cat. No. 64219, U.S.N.M. 

 Figs. 13-19. Holoporelln separata, new species I p. 609 K 



13, 14. Four examples of the small, massive zoarium, natural size. 



15. Ovicelled zooeeia, X 20. 



16. Superficial zooeeia, X 20. They are widely separated and the form of the apertura 



is shown. 



17. Superficial zooeeia, X 20, with a cicatrix before each aiiertura. 



18. Another aspect of the surface, X 20. 

 10. Interior of zooeeia, X 20. 



Middle Jacksonian: One-half mile southeast of Georgia Kaolin Co.'s mine. Twiggs 

 County, Georgia. 



Cat. No. 64220, U.S.N.M. 

 Fiiis. 20-24. HoloporeUa hirostrata, new species (p. 612). 



20. The incrusting zoarium, natural size. 



21. Submarginal zooeeia. X 20. They are oblique and oriented. 



22. Zooeeia, X 20, with interzooecial avicularia. 



23. Ovicelled and ordinary zooeeia, X 20. 



24. Interior of zooeeia. X 20. showing form of apertura and the internal canal. 

 Jliildle Jacksonian f Castle Hayne limestone) : Wilmington, North Carolina. 



Cat. No. 64221. T\S.N..M. 



77 



