248 Dr. J. W. Gregory — Egyptian Corals. 



Among recent Eed Sea species it is most allied to G. clialcidicum, 

 Forsk., which Klunzinger's figures ' do not show to have cribriform 

 septa. 



S. Turonensis has been doubtfully recorded in the Egyptian 

 Miocene by Fuchs.^ 



GENUS INDET. 



The collection includes two blocks of a Miocene coral (Coll. Geol. 

 Surv. Egypt, No. 998), which are the internal casts of a large 

 flat-topped massive corallum. They are labelled Isastrcea, but are 

 insufficiently preserved for identification. The corallites are circular, 

 separated by exotheca, the walls appear to have bee-n solid, the septa 

 are long and thin, and there is no columella. This seines of 

 chai'acters suggest the genus Areecis. The specimens were collected 

 at lat. 30° 12' 20", long. 32° 24' 30". 



III. EOCENE. 



Genus CGELOSMILIA, Edwards & Hairae, 1850. 



CCELOSMILIA MiLNEKI, nOV. 



Diagnosis. 



Corallum free, tapering below to a sharp point ; laterally com- 

 pressed, so that the transverse section is elliptical. The axis is 

 straight or slightly curved. 



Calice shallow. 



Septa very jagged ; five complete cycles, the members of which 

 are very unequal in size; the primary and secondary septa are thick 

 near the periphery ; septa of higher orders thin and short. Septa 

 slightly exsert. 



Axial space very large. 



Epitheca irregular ; when present it consists of a thin layer, 

 horizontally wrinkled. 



Dimensions. 



mm. mm. mm. mm. 



Height 16 ... 13 ... 17-5 ... 29 



Diameter : major ... 18 ... 14-5 ... 14-5 ... 14 



Diameter : minor .. . 13 ... lO-o ... 11 ... 11"5 



Distribution. — Lower Eocene — Libyan Series: Dungul Wells 

 (lat. 23° 30', long. 31° 21'), Upper Egypt ; ColL GeoL Surv. Egypt, 

 No. 265. 



Description of Figures. — PL VIII, Figs. 1, 2, and 3, three 

 specimens seen from the side (Figs, la, 2a, and 3a) and in transverse 

 section (Figs, lb, 2b, and 36) ; nat. size. 



Affinities. — The simple corallum, the absence of endotheca, of 

 pali, and of columella, the large axial space, the broad interseptal 

 loculi, and jagged septa, are the characters which together 



1 C. B. Klunzinger, op. cit., pt. ii (1879), p. 53, pi. v, fig. 8 ; pi. x, fig. 11. 

 ^ Fuchs, op. cit., p. 64. 



