S F, Chapman — Egyptian Foraminifera. 



MiLioLiNA POLYGONA (d'Orbigny). 



QuinquelocuUna polygona, d'Orb., 1839: De la Sagva, Hist. Phisiq., 



etc, Cuba, " Foraminiferes," p. 198, pi. xii, figs. 21-23. 

 miiolina seminulum (L.), Goes, 1882, "Bet. Ehiz. Caribb. Sea": 

 Svenska Vet.-Akad. Handl., vol. xix. No. ix, figs. 

 353, 354. 

 Miliolina Gussensis, Schwager, 1883 : Palseontograpliica, vol. xxx, 



Pal. Theil., p. 85, pi. xxiv (i), figs. oa-d. 

 M. polygona (d'Orb.), Goes, 1894 : Svenska Vet.-Akad. Handl., 

 vol. XXV, No. 9, p. Ill, pi. xxx, figs. 851:-854g ; idem, 

 1S96, Bull. Mus. Comp. Zool. Harvard, vol. xxix. No. 1, 

 pt. XX, p. 83, pi. viii, figs. 11-18. 

 This species in the Egyptian limestone varies much as to size, but 

 the specimens are constant in the characters of the test. 



The specimens named M. Gussensis by Schwager were found in 

 the argillaceous beds with Opercidina libyca of El Guss-Abu-Said 

 (Libyan Stage). 



In recent soundings this form affects warm areas, usually in the 

 neighbourhood of coral reefs. Goes found this species in the West 

 Indies at a depth from 300 to 400 fathoms. 



? Lower Miocene : from a plateau between Cairo and Suez. 

 Frequent. 



Subfamily Peneroplidin-E. 



OEBICULINA, Lamarck [1816]. 



Orbiculina adunca (Fichtel & Moll). 



Nautiius orbiculus, Fichtel & Moll, 1803 : Test. Micr., p. 112, pi. xxi. 

 N. angidatus, idem : ibid., p. 113, pi. xxii. 

 N. aduncus, idem : ibid., p. 115, pi. xxiii. 



Orbiculina adunca (Fichtel & Moll), Lamarck, 1816 : Tabl. Encycl. 

 et Meth., pi. cccclxviii, figs. 2a-c. D'Orbigny, 1839 : 

 Foram. Cuba (in Sagra's "Hist, phisiq. Cuba"), p. 81, 

 pi. viii, figs. 8-14. Brady, 1884 : Rep. Chall., vol. ix, 

 p. 209, pi. xiv, figs. 1-13. Agassiz, 1888 : Three Cruises 

 " Blake," ii, p. 160, figs. 486, 487. 

 Both casts and perfect specimens of Orbiculina occur in the 

 Patellina-limestone. 



0. adunca is known from Eocene and Miocene I'ocks, and at the 

 present time it is confined to fairly shallow water of warm areas. 



? Lower Miocene : from a plateau between Cairo and Suez. 

 Common. 



Subfamily Alveolinin.b. 



ALVEOLINA, d'Orbigny [1826]. 



Alveolina ellipsoidalis, Schwager. 



AheoUna ellipsoidalis, Schwager, 1883 : Paleeontographica, vol. xxx. 

 Pal. Theil, p. 96, pi. xxv (ii), figs, la-i and 2a-c. 

 Examples of the above species are quite common in the Patellina- 

 limestone, and one perfect enough for identification was isolated 



