106 F. Chapman — Foraminiferal Limestones from Egypt. 



II. — On an ALVEOLINA-hlMK&TlO'STli AND NuMMULITIC LIMESTONES 



FROM Egypt. 



By Frederick Chapman, A.L.S., F.R.M.S. 



Part II. 



(PLATES IV AND V.) 



FOEAMINIFERA. 



MILIOLINA, Williamson [1858]. 

 MiLiOLiNA inflata (d'Orbigny). 



TrilocuUna inflata, d'Orbigny, 1846 : Forani. Foss. Vienne, p. 278, pi. xvii, 

 figs. 13-15. 



This species is fairly common in the J.feeoZma-limestone of the 

 present series, occurring both in the powdered rock and in thin 

 sections. For the previous occurrences of the species in Egypt see 

 Geol. Mag., 1900, p. 7. 



Nos. 3,335& and c. Farafra Oasis : Libyan Series. 



MiLioLiNA trigonula (Lam.). 



M. trigonula (Lam.), Schwager, 1883 : PalaBontograpMca, voL xxx, PaL Theil, 

 p. 86, pi. xxiv (i), figs. %ar-d. Chapman, 1900 : Geol. Mag., p. 6. 



A single specimen, rather quinqueloculine than trigonuline in 

 contour, was isolated from the J.foeoima-limestone. 

 No. 3,3356. Farafra Oasis : Libyan Series. 



ALVEOLINA, d'Orbigny [1826]. 

 Alveolina ellipsoidalis, Schwager. 



Schwager, 1883 : PaleeontograpMca, vol. xxx, Pal. Theil, p. 96, pi. xxv (ii), 

 figs. Iff-i, la-c. Chapman, 1900: Gteoi. Mag., p. 8. 



This species was described by Schwager from Dr. Schweinfurth's 

 specimens which the latter obtained from Wadi Natfe. It has also 

 been found by the writer in PatelUna - limestone from a locality 

 between Cairo and Suez. This present occurrence seems to support 

 the idea which Blanckenhorn has already advanced,^ that the rock 

 which yielded PatelUna is of earlier date than Miocene, to which it 

 was thought referable, though with some reservation. In the 

 present series A. ellipsoidalis is somewhat rare. 



Farafra Oasis. Nos. 3,3356 and c. Libyan Series. 



Alveolina decipiens, Schwager. 



Schwager, 1883 : Palseontographica, vol. xxx, Pal. Theil, p. 103, pi. xxvi (iii), 

 figs. la-7v. 



This form is easily recognized among the separated specimens 

 by its large size. In shape it is ellipsoidal, but with blunt ends. 

 Internally it is distinguished from A. pasticillata by the shape of 

 the septal canals. 



Frequent. Specimens 3,3356 and c. Farafra Oasis : Libyan 

 Series. 



1 Zeitschr. deutsch. geol. Gesellsch., 1900, p. 431. 



