54 UPPER CRETACEOUS-LOWER TERTIARY FORAMINIFERA 



succession of six widely-separated sections in Egypt : Globotruncana aegyptiaca 

 Nakkady, G. aegyptiaca var. duwi Nakkady, G. aegyptiaca var. /. Nakkady, G. area 

 (Cushman), G. area (Cushman) var. esnehensis Nakkady, G. cretacea Cushman, 

 G. pseudocretacea Nakkady ; Globigerina bulloides d'Orbigny, G. cretacea d'Orbigny, 

 G. cretacea d'Orbigny var. esnehensis Nakkady, G. linaperta Finlay, G. quadrata White ; 

 Globorotalia colligera (Schwager), G. colligera (Schwager) vavxrassaformis (Galloway 

 & Wissler), G. crassata (Cushman) var. aequa Cushman & Reuz, G. deceptoria 

 (Schwager), G. simidatilis (Schwager), and G. velascoensis (Cushman). 



However, examination of his specimens in the British Museum (Natural History), 

 London, showed clearly that: 



i. G. aegyptiaca var. I is an entirely single-keeled form which belongs to the 

 Globotruncana gansseri group. 



2. Typical forms of Globotruncana stuarti stuarti (de Lapparent) were included 



within his G. area (Cushman), and thus the former species was not recorded 

 in spite of its abundance in his material and in the Egyptian Maestrichtain 

 rocks in general. 



3. G. area var. esnehensis is a distinct species from G. area (Cushman) as realized 



by Nakkady & Osman (1954), and is thus treated separately. 



4. Specimens of G. cretacea Cushman actually belong to Globotruncana stuarti 



stuartiformis Dalbiez, G. gagnebini Tilev, and G. aegyptiaca aegyptiaca 

 Nakkady. 



5. G. pseudocretacea sp. nov. is probably Globotruncana gagnebini Tilev. 



6. G. bidloides d'Orbigny includes some forms related to Globigerina bacuana 



Khalilov and others, which though indeterminable, are completely different 

 from the form of d'Orbigny. 



7. Forms described as G. cretacea d'Orbigny are actually Globorotalia trinida- 



densis Bolli G. compressa (Plummer) and G. cf. pseudobulloides (Plummer). 

 The form described by d'Orbigny is a true Globotruncana, not a Globigerina, 

 and does not cross the Campanian-Maestrichtian boundary. 



8. The holotype of G. cretacea var. esnehensis is actually Globigerina mckannai 



White, while the paratype is a transitional stage between Globorotalia 

 pseudobulloides (Plummer) and G. trinidadensis Bolli. 



9. G. linaperta Finlay is Globigerina triloculinoides Plummer. 



10. Globigerina quadrata White includes Globorotalia irrorata Loeblich & Tappan, 



G. tribulosa Loeblich & Tappan, Globigerina triloculinoides Plummer, 

 besides Globorotalia quadrata (White). 



11. Specimens of G. colligera (Schwager) belong to Globorotalia cf. subbotinae 



Morozova, G. cf. aequa Cushman & Renz, and G. cf. wilcoxensis Cushman 

 & Ponton. The form described by Schwager was recorded from younger 

 strata and is not well known. Until the holotype is refigured and rede- 

 scribed in more detail, it is not really known what is meant by G. colligera 

 (Schwager) . 



