PLATE IX. 



Orthophraginina marginata Cushman (p. 43). 



Figure 1. Exterior view of partly broken specimen, X 5. St. Jean Bay, St. Bartholomew, Leeward Islands (U. S. 



G. S. station 6924). 

 Figure 2. Vertical section, X 20, of half a specimen from the same locality. 



Orthophragmina flintensis Cushman (p. 44). 



Figure 3. Exterior view, X 10, of specimen from the Brito formation of Nicaragua (U. S. G. S. station 6408). 



Figure 4. Sectional horizontal view of type specimen, X 20, showing proloculum and second chamber, which nearly 



encircles it, and the annular rings of narrowly rectangular chambers. Ocala limestone of Georgia 



rJ.S.G.S.7115). 



Figures 5, 6. Vertical sections, X 20, showing the numerous enlargements along the line of equatorial chambers 



and the pillars ending in the papillae of the surface. Nicaragua (U. S. G. S. station 6408). 



Orthophragmina floridana Cushman (p. 44). 



Figure 7. Surface view of type specimen, X 8. Ocala limestone of Florida (U. S. G. S. station C768). 

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