112 F. Chajjman — Formniniferal Limestones from Egyjjt. 



NuMMULiTEs DiscoRBiNA, Schlotheim, 



Lentictdites discorbina, Schlotheim, 1820 : Petrefactenkunde, p. 89. 

 Nummulites discorbina (Schlotheim), De la Harpe, 1883 : Palseontographica, 

 vol. XXX, Pal. Theil, p. 183, pi. xxxii (iii), figs. 1-7. 



A small nummulite with a thick, rounded test, and numerous 

 whorls (maximum fourteen on a radius of 4 mm.). Usually 

 associated with N. Beaumonti and allied forms, although our samples 

 prove an exception. 



Specimen l,480e. West of Bawitti, on plateau west of Baharia 

 Oasis. Common. Middle Eocene : Lower Mokattam Series. 



NuMMULiTES suBDiscoRBiNA, De la Harpe. 



JV. snbdiscorbina, De la Harpe, 1883 : Palaaontograpliica, vol. xxx. Pal. Theil, p. 185, 

 pi. xxxii (iii), figs. 8-15. Chapman, 1900 : Geol. Mag., p. 11, 

 PI. XIII, Fig. 1. 



Specimen l,480e. West of Bawitti, on plateau west of Baharia 

 Oasis. Frequent. Middle Eocene : Lower Mokattam Series. 



NuMMULiTES GizEHENSis (Forskal), Ehrcnbcrg, var. Paohoi, 

 De la Harpe. 



N. Gizehensis var. Pachoi, De la Harpe, 1883 : Palseontographica, vol. xxx, Pal. 

 Theil, p. 193, pi. xxxiii (iv), figs. 14-18; pi. xxxiv (v), figs. 1-5. 

 Chapman, 1900 : Geol. Mag., p. 12. 



This variety has already been recorded from the Baharia Oasis by 

 De la Harpe. It occurs in the present series in two samples from 

 the same locality, namely, specimens l,467dand l,480e, 39 kilometres 

 west of Bawitti, on plateau west of Baharia Oasis. Common. 

 Middle Eocene : Lower Mokattam Series. 



NuMMULiTES curvispika, Savi & Meneghini. 



Nummulina curvispira, Savi & Meueghiui, 1851 : Consid. Geol. Toscana, p. 137. 

 N. curvispira (Menegh.), De la Harpe, 1883 : Palaeontographica, vol. xxx, 

 Pal. Theil, p. 200, pi. xxxiv (v), figs. 42-67. Chapman, 1900 : Geol. 

 Mag., p. 13, PI. XIII, Fig. 5. 

 Typical specimens of the above were found in four of the samples 

 of the present collection. In that from Jebel Hamrawen this species 

 forms a large proportion of the rock, and is near the normal size, 

 measuring 1-5 mm. in diameter. 



Specimens 1,622, 56/«, and 1,622, 6/c, under Eocene nodular bed 

 near Jebel Hamrawen. Very abundant. 



Specimen 1,467J. 39 kilometres west of Bawitti, on plateau west 

 of Baharia Oasis. Common. 



Specimen l,480e. Same locality. Occasional. Middle Eocene : 

 Lower Mokattam Series. 



ORBITOIDES, d'Orbigny [1847] . 

 Orbitoides (Discocyclina) dispansa (Sowerby). 

 Lycophris dispansus, Sowerby, 1837 [1840] : Trans. Geol. Soc. Lond., ser. ii, vol. v, 

 pp. 327, 718, pi. xxiv, figs. 16, 16a, b. 

 It appears that this species has not been recorded before from the 

 Baharia Oasis. 



Specimen l,480e. West of Bawitti, on plateau west of Baharia 

 Oasis. Very rare. Middle Eocene : Lower Mokattam Series. 



