CUSHMAN 



PLATE 2 



1. Rock specimen, 0.8 natural size, made up largely of (a) Lepidocyclina undosa, n. =p., and (6) Hct- 

 erostcgina antillea, n. sp. 



2 and 3. Vertical sections of Orthophragmina antillea, n. sp. X 16. 



4. Vertical section of part of central umbonal portion and peripheral flange and thickened peri- 

 phery of Orthophragmina marginata, n. sp. X 16. 



