F. Chapman — Foraminiferal Limestones from Egypt. Ill 



Specimen 3,348^. Eight kilometres N.N.W. of Bawitti, Baharia 

 Oasis. Frequent. Lower Eocene : Libyan Series. 



NuMMULiTES Eamondi, Defrance. 



jV. Ramondi, Defrance, 1825 : Diet. Sci. Nat., vol. xxxv, p. 224. Chapman, 1900 : 

 Geol. Mag., p. 10, PL XIII, Figs. Zb, U. 



Specimen No. 1,531/. Eight kilometres north of Mendische, 

 Baharia Oasis. Common. Lower Eocene : Libyan Series. 



NuMMULiTES VARI0LA.RIA (Lamarck). 



J\r. variolaria (Lam.), De la Harpe, 1883 : Palajontograpliica, vol. xxx, Pal. Theil, 

 p. 179, pi. xxxi (ii), figs. 28-36. Chapman, 1900 : Geol. Mag., p. 11, 

 PL XIII, Fig. 2b. 



This species is one of the commonest in the present series of 

 limestones in the two samples quoted below. Some of the sijecimens 

 are very small, measuring as little as 1 mm. in diameter. They are 

 well characterized by the large central chamber, and usually have 

 from three to four turns to the shell. 



Specimen 2,195, 17*. Two kilometres north-west of Camp 49, 

 Wadi Dara, east of Eed Sea Hills. Common. Miocene. 



Specimen 1,531/. Eight kilometres north of Mendische, Baharia 

 Oasis. Very common. Lower Eocene : Libyan Series. 



NuMMULiTEs Beatjmonti, d'Archiac. 



De la Harpe, 1883: Palfeontographica, vol. xxx, Pal. Theil, p. 180, pi. xxxi, 

 figs. 37-47. 



Our largest specimens exceed the measurement given by 

 De la Harpe by -5 mm., and a fair number attain his maximum 

 diameter of 12 mm. The distinctive characters of this form are, 

 when seen externally, the medium thick test, evenly lenticular 

 or slightly flexuose in edge view, and the shell surface marked 

 with fine radial lines. The test is from 4 to 12 mm. or more 

 in diameter, and from 2 to 4 mm. thick ; the whorls number, 

 according to De la Harpe, twelve to thirteen on a radius of 4 mm. 

 and sixteen on a radius of 7 mm. 



It has been recorded from the Mokattam, Wadi-el-Tih, near 

 Heluan, on the Jebel Achmar, on the pyramids of Gizeh ; also 

 between the Nile Valley and the Farafra, Baharia, and Siuah Oases. 



Specimen 3,535, 52L North of Salamuni, between Assiut and 

 Qena, east side of Nile. Common. Lower Eocene : Upper Libyan 

 Series. 



Specimen 1,516^. 17 kilometres N.N.E. of Ain-el-Haiss, Baharia 

 Oasis. Abundant. Middle Eocene : Lower Mokattam Series. 



NtTMMULiTES sub-Beaumonti, De la Harpe. 



N. sub-Beaumonti, De la Harpe, 1883 : Palfeontographica, vol. xxx. Pal. Theil, 

 p. 182, pi. xxxi (ii), figs. 48-56. 



This form is associated with the preceding, and occurs in the two 

 samples before quoted, namely, specimens 3,535, 521, and 1,51 67i. 

 It is smaller than N. Beaumonti, measuring 1^ to 5 mm., and it is 

 stouter in comparison, being from 1 to 2\ mm. thick. 



