6 F. Chapman — Egyptian Foraminifera. 



MilioUna ohlonga dates back as far as the Eocene period, and it is 

 found living at the present day, usually in shallow Avater. 



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



MlLIOLINA SUBROTUNDA (Montagu). 



Vermicidiim suhrotundiim, Montagu, ]803 : Test. Brit., pt. ii, p. 521. 

 Quinqiielocidina suhrotimda (Mont.), d'Orb., 1826 : Ann. Sci. Nat., 



vol. vii, p. 302, No. 36. 

 Miliola (Quinqueloculina) siibrotimda (Mont.), Parker & Jones, 1865: 



Phil. Trans., vol. civ, p. 411, pi. xv. fig. 38. 

 MilioUna siibrotunda (Mont.), Brady, 1884: : Eep. Chall., vol. ix, 



p. 168, pi. V, figs. 10, 11. 

 JIf. siibi'otunda (Walker & Boys), Goes, 1894 : Kongl. Svenska Vet.- 



Akad. Handl., vol. xxv, p. 109, pi. xix, figs. 846, 847. 

 M. sid)rotunda (Mont.), Eupert Jones, 1895: Mon. Foram. Crag, 



pt. ii, p. 120, woodcut, fig. 9. Millett, 1898 : Journ. 



Eoy. Micr. Soc, p. 502. 

 The specimens from the Egyptian limestones are very typical. 

 As a fossil this species dates from Miocene times. It is an 

 essentially shallow-water form at the present day, and this is the 

 case with the other Miliolines recorded from the Egyptian Miocene 

 limestone. 



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

 Frequent. 



MlLIOLINA TKiGONULA (Lamarck). 



Miliolites trigonula, Lamarck, 1804 : Ann. du Museum, vol. v, 

 p. 351, No. 3. 1822 : Anim. sans Vert., vol. vii, 

 p. 612, No. 3. 

 Triloctdina Austriaca, d'Orb.. 1846 : Foram. Foss. Vienne, p. 275, 



pi. xvi, figs. 25-27. 



MilioUna trigomda (Lamarck), Williamson, 1858: Eecent Foram. 



Gt. Brit., p. 83, pi. vii, figs. 180-182. Schwager, 1883 : 



Palfeontographica, vol. xxx, Pal. Theil, p. 86, pi. xxiv (i), 



figs. 6a-d. Brady, 1884: Eep. Chall., vol. ix, p. 164, 



pi. iii, figs. 14-16. Sherborn & Chapman, 1889 : Jonrn. 



Eoy. Micr. Soc, p. 484, pi. xi, fig. 1. Terrigi, 1891 : 



Mem. Eoy. Com. Geol. Ital., vol. iv, pt. i, p. 66, pi. i, 



fig. 4. Goes, 1894 : Kongl. Svenska Yet.-Akad. Handl., 



vol. xxv, p. 115, pi. xxii, fig. 870. Millett, 1898: Journ. 



Eoy. Micr. Soc, p. 503. 



There is some variability in the dimensions of the Egyptian 



specimens, but they are otherwise characteristic. Schwager has 



recorded this species from the cherty Alveolina-l'nnestone, between 



Siut and Farafrah ; in the Miliolina-Ynxiestone of the Arabian Desert 



at Wady Natfe ; also similar forms near Minieh and Mokattani. 



M. trigomda dates from the Eocene period, and is also found fossil 

 in Miocene strata and onwards to the present day. 



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

 Frequent. 



