PLATE ii 



Figs. ia-b. Globotruncana contusa contusa (Cushman), from S.18, W. El-Sharawna 

 section. 



a — Axial section of hypotype, approximately x 120, plane polarized light. b — same, crossed 

 nicols. 



Fig. 2. Globotruncana lugeoni Tilev, from S.21, W. El-Sharawna section ; axial section 

 of hypotype, approximately x 187, plane polarized light. 



Fig. 3. Globotruncana gansseri gansseri Bolli, from S.18, W. El-Sharawna section ; 

 axial section of hypotype, approximately x 440, plane polarized light. 



Fig. 4. Globotruncana arabica sp. nov, from S.22, W. El-Sharawna section ; axial section 

 of paratype, approximately x 154, plane polarized light. 



