F. Chapman — Egyptian Foraminifera. 6 



B. biilloicles is quite a commou species in the Pa/eW/im-limestone. 

 On crushing the rock the little snbspherical tests are seen amongst 

 the debris, and projecting from the surfaces of the larger fragments. 

 They often have the sliell-wall perfect, and are occasionally noticed 

 as casts. The contour of the test in these Egyptian specimens is 

 very typical, having a globose penultimate chamber and a slightly 

 elongated aboral neck. Passage forms occur which link this species 

 Avith its more pyrifortn variety next described. 



Although B. hnlloides ranges throughout the Tertiary fossiliferous 

 strata to recent times, yet the fossil forms seem to be distinct in 

 some of their characters, as shown by Schlumberger. 



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

 Common. 



BiLOCULINA BULLOIDES, Var. INORNATA, d'Orb. 



Biloculina inornata, d'Orb., 1846 : Foram. Foss. Vienue, p. 266, 



pi. xvi, figs. 7-9. 

 B. bulloides, d'Orb., var. truncata- gracilis, Reuss, 1867 : Sitzungsb. 



Akad. Wiss. Wien, vol. Iv, p. 69, pi. ii, fig. 2. 

 B. bulloides, var. inornata, d'Orb., Rupert Jones, 1895 : Mon. Foram. 



Crag (Pal. Soc), pt. ii, pp. 101-2, pi. vii, figs. la-c. 



The slightly elongate variety of B. bulloides may be referred to 

 £. inornata of the Vienna Tertiaries. It is not so common as the 

 typical B. bulloides in this Egyptian limestone, but is represented, 

 nevertheless, by several good examples. 



Besides its original occurrence in the Miocene of the Vienna 

 Basin, this variety has been found in many fossiliferous deposits of 

 Pliocene age. 



? Lower Miocene : between Cairo and Suez. Frequent. 



MILIOLINA, 'Williamson [1858]. 



MiLIOLINA OBLONGA (Moutagu). 



Vermicidum oblongum, Montagu, 1803 : Test. Brit., p. 522, pi. xiv, 



fig. 9. 

 Miliolina seminidum (L.), \a.r. ohlonga (Montagu), Williamson, 1858 : 



Recent Foram. Gt. Brit., p. 86, pi. vii, figs. 186, 187. 

 M. oblonga (Mont.), Brady, 1881 : Rep. Chall., vol. ix, p. 160, pi. v, 

 figs. 4«, b. De Amicis, 1893 : Boll. Soc. Geol. Ital., 

 vol. xii, fasc. 3, pp. 27, 178, 179, 317. Goes, 1894: 

 K. Svensk. Akad. Handl., vol. xxv. No. 9, p. 110, pi. xx, 

 figs. 850, 850/. Rupert Jones, 1895 : Mon. Foram. 

 Crag, pt. ii, p. 120, pi. iii, figs. 31, 32; pi. v, fig. 5. 

 Millett, 1898 : Journ. Roy. Micr. Soc, p. 267, pi. v, 

 figs. 14a, b. 

 Examples of this somewhat variable species were found with both 

 the triloculine and the quinqueloculine forms. The triloculine 

 variation is more typical. The quinqueloculine form seems to be 

 somewhat closely allied with Miliolina alveoliniformis, Brady, and 

 also with Schlumberger's subgeneric type of Fentellina. 



