IN THE ESNA-IDFU REGION, NILE VALLEY, EGYPT 261 



(2). Globorotalia aequo, Cushman & Renz (pp. 381, 382, pi. 2, fig. 8) is a keeled form 

 while the holotype and hypotypes in the present study are not at all keeled. They 

 appear to have lumped several other forms within their G. aequo such as G. loeblichi 



El-Naggar. This is clear from their description (p. 382) " peripheral margin 



sharply angled, sometimes with a well developed keel ; umbilicus wide ; 



keel and spiral sutures thickened and nodose ; ventral side smooth ". 



(3). Globorotalia angulata (White) (p. 382, pi. 1, fig. 3) is probably a transitional 

 stage to G. angulata abundocamerata Bolli ; it is a keeled form with five chambers in 

 the last whorl while White's holotype is typically non-keeled. Their Globorotalia 

 conicotruncata (Subbotina) (p. 383, pi. 2, fig. 7) is probably G. angulata angulata 

 (White). 



(4). Globorotalia broedermanni Cushman & Bermudez (p. 382, pi. i, fig. 4) differs 

 from the holotype in being much larger, flatter on the dorsal side and less tightly 

 coiled. 



(5). Globorotalia colligera (Schwager) (p. 382, pi. 1, fig. 14) does not belong to this 

 species ; Schwager's form was recorded from younger strata and the holotype needs 

 to be redrawn and redescribed in more detail. 



(6). Globorotalia compressa (Plummer) (p. 382, pi. 3, fig. 13) probably belongs to 

 Globorotalia emilei El-Naggar. Globorotalia compressa is restricted to the Danian, 

 while their form comes from the Lower Landenian. 



(7). Globorotalia convexa Subbotina (p. 383, pi. 3, fig. 17) differs from the holotype 

 in having fewer chambers and in lacking a concave, bulla-like last chamber. It 

 probably belongs to the form described in the present study as Globorotalia cf. 

 convexa. 



(8). Globorotalia imitata Subbotina (p. 383, pi. 3, fig. 6) differs from the holo- and 

 paratypes of Subbotina and the hypotypes of the present study in being much 

 flatter on the dorsal side, more protruding on the ventral, having more acute axial 

 periphery and less inflated chambers. The forms recorded in the present study agree 

 well with Subbotina's original description and figures. 



(9). Globorotalia interposita (Subbotina) (p. 383, pi. 1, fig. 15) does not belong to 

 this species. Acarinina interposita Subbotina is a synonym of Globigerina soldado- 

 ensis Bronnimann. 



(10). Globorotalia lensiformis Subbotina (p. 383, pi. 2, fig. 2) is Globorotalia 

 occlusa Loeblich & Tappan. Subbotina's form was described from the Lower- 

 Middle Eocene while their form is recorded from the Upper Landenian. 



(11). Globorotalia pentacamerata (Subbotina) (p. 384, pi. 1, fig. 6) is probably a 

 deformed specimen of Globigerina mckannai White. 



(12). Globorotalia planoconica Subbotina (p. 384, pi. 3, fig. 12) apparently 

 includes forms related to both Globorotalia emilei El-Naggar and G. troelseni Loeblich 

 & Tappan. Subbotina's form was originally described from the Lower-Middle 

 Eocene while theirs comes from the Upper Landenian- Ypresian. 



(13). Globorotalia pseudobulloides (Plummer) (p. 384, pi. 1, fig. 16) seems doubtful 

 because of their description of the chambers as compressed and of the surface as 



