F. Chapman — Egijptiati Foraniiii/fera. 13 



TEUNCATULTNA, d'Orbigny [1826]. 

 Truncatulina Ungeriaxa (d'Orbigny). 



Rotalina Ungeriana, d'Orb., 1846 : Foram. Foss. Vienne, p. 157, 



pi. viii, figs. 16-18. 

 Truncatulina Ungeriana (d'Orb.), Eeuss, 1866 : Denk. Akad. Wiss. 



Wien, vol. xxv, p. 161, No. 10. Brady, 1884: Eep. 



Chall., p. 664, pi. xciv, figs. 9a-c. 



The example found is very typical, and has the form of the test 

 well preserved ; it was obtained by powdering tlie rock. The above 

 species makes its appearance in beds of Cretaceous age, and it occurs 

 commonly throughout the Tertiary formations. 



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

 specimen. 



Subfamily Tinoporin.e. 



GYPSINA, Carter [1877] . 



Gypsina crassitesta, sp. nov. (PL II, Fig. 4.) 



Test hyaline and adherent ; coarsely perforate ; consisting of series 

 of dome-shaped segments overlying one another alternately and in 

 about five or more successive layers. The first series of chambers 

 more spherical than the later ones. The test is adherent to thin 

 shell fragments or consolidated pieces of sand. Average diameter of 

 the chamber's, -,rG inch ("26 mm.). The largest specimen found 

 measures 2% inch (9 mm.) in length ; height, T^rinch (•75 mm.). 



The recent Gijpsina inhcdrens (Schultze) ' has a similar habit of 

 growth to this species, but it is usually much thinner in its shell- 

 wall. The present species has coarse tubuli, such as is often present 

 in Gypsina. The nature of the thick walls also reminds one of 

 a similar character seen in Carpenteria. Gypsina vesiciilaris, var. 

 disciis, Goes,- may also be compared with the above species with 

 regard to the depressed form of the test, especially in one of our 

 specimens, where the peripheral edge is neatly rounded ofi". 



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

 Frequent. 



POLYTEEMA, Eisso [1826]. 



POLYTREMA PAPYRACEA, Sp. nOV. (PI. II, Fig. 5.) 



Test adherent, consisting of layers of somewhat acervuline but 

 much elongated chambers, extending along the plane of attachment. 

 The test often attains the length of i inch (6'25 mm.) ; greatest 

 thickness, -3-Vinch (•694 mm.). 



A passage form between this species and the well-known recent 

 Polytrema miniaceum (L.) has been found in certain Tertiary and 

 recent limestones, and will shortly be described. The present species 

 is distinguished by its limited extent and compressed lenticular shape. 



' Acervidina inheerens, Schultze, 1S54 : " Organismus Polythal.," p. 6S, pi. vi, 

 fig. 12. 



* Bull. Mus. Comp. Zool. Harvard, 1896, vol. xxix, Xo. 1 (xx), p. 74, pi. vii, 

 figs. 4-6. 



