54 Prof. J. W. Gregory — Fossil Corah from JSg>/pf, etc. 



Figure. — PI. VI, Fig. 5, a few corallites of H 1862, nat. size. 



This species is a very close ally of 0. defrancci (Ed, & H.), from 

 which it differs by the walls of the corallites being thimier, and by 

 having some of the exothecal dissepiments arranged concentrically 

 like a second wall, as shown in a figure (Geol. Mag., 1898, PI. IX, 

 Fig. 3). This feature is well shown among the present collectioa 

 by specimen No. H 1862, of which the corallites are figured ou 

 PI. VI, Fig. 5. 



3. Orbicella defrancei (Edwards & Haime), 1850. 

 (PL VI, Fig. 6.) 



Astrea dej}-a»cei, Edwards & Ilaiinc, 1850 : Auu. Sci. nat., ser. iii, vol. xii, p. 106. 

 Heliastrcii drfrcuicci, Edwards & Haime, 1857 : Hist. nat. Cor., vol. ii, p. 465. 

 Hcliat^frca defrancei. Yon Ivoiiss, 1872, Kor. iist. ung. Mioc. : Denk. Akad. Wiss. 



Wien, vol. xxxi, p. 239, pi. ix, (ij;-. 3 ; pi. x, lig. 1. 03^fl 



Orhicdla cf. defrancci, Felix, 1904, Tert. quart. Ivor, iigypt. : Zeit. deut. geol. Ges., 



vol. hi, p. 172. 



Distribution. — Miocene. France, Italy, Austria, Crete, and Asia 

 Minor. Egypt, west flank of Jebel Mellaha, H 18626 ; Abu Sha'ar, 

 H 1768. East of Cairo (Felix). 



Figures. — PI. VI, Fig. 6, a few corallites from a transverse section, 

 by 1-^ diameter. These show the relation of the species to its ally 

 0. schweiiifurthi. 



SOLENASTE^A (Edwards & Haime), 1848. 



SOLENASTKiEA ELLIPTICA, U.sp. (PI. VII, Fig. 11.) 



Corallum large, massive ; the corallites are long and cylindrical. 

 Corallites extremely crowded. They are elliptical in section, 

 separated by a narrow baud of cellular exotheca, while ou the 

 surface the walls sometimes appear confluent. Calicular edges only 

 slightly raised. 



Septa, three complete cycles, of which the primary and secondary 

 are snbeqnal in size. 



Columella very imperfectly developed ; rudimentary in many 

 corallites. 



Dimensions. — The specimen is a fragment : — 



Lcngtli 110 mm. 



Width 82 ,, 



Thickness 115 ,, 



Corallites : 



Diameter 2 mm. byl'25 ,, 



Calicinal centres : 



Distance 2-3 ,, 



Figjtres. — PI. VII, Fig. llo, part of the surface, by 2 diam. ; 

 Fig. 116, part of a transverse section, by 4 diam. 



Distribution. — Miocene : Abu Sha'ar, H 1818«. 



Affinities. — This agrees very closely with S. chalcidicum (Forsk.) 

 in the size of its corallites, the subequal size of the primary and 

 secondary septa, and rudimentary development of the columella. 

 It difters by the elliptical shape of the corallites, and the fact that 

 the septa are larger and more conspicuous on the surface, and the 



