F. Chapman — Foraminiferal Limestones from Egypt. 107 



Alveolina decipiens, var. dolioliformis, Scbwager. 



Schwager, 1883: Palseontographica, vol. xsx, Pal. Theil, p. 103, pi. xxv (ii), 

 figs. la-g. 



A few isolated specimens of this variety were noted among the 

 other Aheolince. It has the test sunken in the umbilical centres. 

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



Alveolina pasticillata, Scbwager. 



Schwager, 1883: Palseoutograpliica, vol. xxx, Pal. Theil, p. 104, pi. xxvi (iii), 

 figs. 2a-h. 



This rotund species is by far the commonest in our collection 

 of Alveolince. It was previously recorded from Wadi Natfe, Nekeb-el- 

 Farudj, and El-Guss-Abu-Said, by Scbwager. 



Very abundant. Specimens 3,3356 and c. Farafra Oasis : 

 Libyan Series. 



PLACOPSILINA, d'Orbigny [1850]. 



Placopsilina cenomana, d'Orbigny. (PI. V, Fig. 4.) 



D'Orbigny, 1850 : Prodrome Paleont., vol. ii, p. 185, No. 758. Brady, 1884 : Eep. 

 Chall., vol. ix, p. 315, pi. xxxvi, figs. 1-3. 



The occurrence of the present specimen is of considerable interest, 

 since the species has never been recorded from Tertiary beds, 

 although it is a well-known form in deposits of Cretaceous age 

 as well as those of recent date. 



One small but perfect specimen, attached to a shell-fragment. 

 Specimen 3,3356. Farafra Oasis : Libyan Series. 



TEXTULAEIA, Defrance [1824]. 

 Textulakia, sp. near gramen, d'Orbigny. 



T. ffrainen, d'Orb., 1846 : Foram. Foss. Vienne, p. 248, pi. xv, figs. 46. 



This genus is here represented by a single specimen, seen in section, 

 from the limestone of the Baharia Oasis. Its outline is like that 

 of T. gramen, but we cannot be quite certain of the species, since 

 no other sections were seen, nor specimens isolated from the rock. 

 None of the examples of Plecanium figured by Scbwager quite match 

 our specimen. 



No. l,480e. Plateau west of Baharia Oasis : Lower Mokattam 

 Series. 



VALVULINA, d'Orbigny [1826]. 

 Valvulina Sohwageri, sp. nov. (PI. V, Figs. 5a-cl.) 



Olavulina sp., Scbwager, 1883 : Palasontograpbica, vol. xxx, Pal. Theil, pi. xxvi (iii), 

 figs. 19a, b. 



Test triserial, triangular in outline, consisting of about five series 

 of chambers arranged as in Vemeuilina. The angles of the test 

 slightly rounded, the faces slightly concave. Aperture valvuline, 

 seen more distinctly in section than in the isolated specimens. 

 Length, 1-1 mm. ; greatest breadth, '8 mm. 



This form has already been figured by Scbwager and referred to 

 as Clavulina sp., but no specific name was assigned to it. 



