Plate 65. 



Figs. 1-3. Porclla aMita, new species (p. 4S9). 



1. Two fragmeuts of the bilamellar zoariiiru. natural size. 



2. The usual aspect of the surface, X 20. 



Upper Jacksonian (Oeala liiuestoue) : Alachua, Florida. 

 Cat. Xo. 64154. U.S.X.M. 



3. View of a more calcified zoarium, X 20. A closed zooeciuni is seeu in the center 



of the figure. 

 Upper Jacksonian (Ocala limestone) : Nine miles north of Ocala, Florida. 

 Cat. No. 64155, U.S.N.M. 

 Figs. 4-S. Pkocciinn simulator, new species (p. 490). 



4. A group of the free, cylindrical unbrauched zoaria. natural size. 



5. Zoariuu), X 20. The peristome occasionally Iiears a small avicularimn. 



6. Another example, X 20, with the pseudolyrula visible. 

 T. The usu.-il aspect of the species, X 20. 



S. Ivongitudinal section of a zooecium, X 20. 



ap, apertura; or, peristoniial aviculariuin : o/, olocyst; pe, peristome: pi, peristomie; 



pin, peristomice ; z, zooecium. 

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

 Cat. No. 64156, U.S.N.M. 

 Figs. 9-14. Ifctepora scutiilatn, new species (p. .504). 



9. Fragments of the free, reticulated zoarium, u:itural size. 



10. Finely granulated dorsal side. X 20. 



11. A branch with ovicelled zooecia, X 20, 



12. The usual aspect of the species, X 20, showing the indistinct zooecia. 



13. Ordinary and ovicelled zooecia, X 20. A small avicularium is present on the 



anterior lip of the peristomie. The ovicell bears a round cleft. 



14. Smooth dorsal side, X 20. Vibices are very rare. 



Upper Jacksonian (Oeala limestone) : Chipola River, east of JIarianna, Florida. 

 Cat. No. 6415T, U.S.N.M. 

 Figs. 15-25. Retcpora raiiiosa, new species (p. 501). 



15. Fragment of the free dichotomously branched zoarium, natural size. 



16. Usual aspect of the celluliferous side, X 20. 



IT. View of another specimen, X 20, in which the tuberosities are less developed. 

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

 Cat. No. 64158, U.S.N.M. 



18. A fragment, X 20, with strongly developed tuberosities. 



19. Ovicelled zooecia, X 20, with fissure of ovicells shown frequently. 



20. Dorsal, X 20, with vibices replaced by furrows. 

 Middle Jacksonian: Near Lenuds Ferry, South Carolina. 



Cat. No. 641.59. U.S.N.M. 



21. An example, X 20, with the spiramen well exhibited. 



22. Dorsal, X 20, preserving vibices with pores between them. 



23. Tangential thin section, X 20. Tlie relations of the ovicell, apertura and spiramen 



are shown. 



24. A branch, X 20, bearing zooecia with a very large spiramen. 



25. Sketch of a longitudinal section, X 20, through a zooecium with ovicell. 

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



Cat. No. 641.58, U.S.N.M. 

 66 



