CUSHMAN 



1. Rock specimen, O.S natural size, made up largely of (a) Lcpidocyclina undosa, a. "p., and (b) Hct- 

 erostegina antillca, 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. 



