The Cretaceous Fnvna of Pondoland. 285 



(These two forms being unilaminar incrustations rather fall under 

 the genus Berenicea than Diastopora). In Elea meridiana the 

 apertures are almost but not quite terminal. But even this is not 

 a quite conclusive distinction between Eleids and Cyclostomes ; for 

 one genus of the latter, Haplocecin '^'- has apertures which are not 

 quite terminal. Finally, in most Eleidae the apertures are triangular 

 or sub-triangular; but a few species, e.g., Multclea simplex, 

 d'Orbigny f and M. orplianus, Novak \ have circular or elliptical 

 apertures. 



It is significant that the Eleid characters of non-terminal flattened 

 apertures are more conspicuous in the distal part of the zoarium of 

 specimen 4 while in the proximal parts the zooecia much more resemble 

 those of Diastopora, being longer and less immersed, besides having 

 rounder and more terminal apertures. Specimen 6 approximates 

 more to Diastopora than does specimen 4. 



Compared with other Eleids, Elea meridiana falls among those 

 which have circular or sub-circular apertures as distinguished from 

 those in which the apertures are triangular or trifoliate. The small 

 size of the apertures distinguishes it from forms like Reptoceritites 

 Bowei, Gregory, in which the apertures are about -3 mm. in diameter. 

 It differs from Multelca orphanus, Novak, by the large size of the 

 diameter of the aperture compared with that of the zooecium; in 

 M. orphanus the diameter of the aperture is not half that of the 

 zooecium. It is very like Multelea simplex, d'Orbigny, but the 

 apertures of M. simplex are all circular and none of them elliptical as 

 are so many in Elea meridiana. 



Genus MEMBEANIPORA, Blainville. 



Membranipora irregularis (d'Orbigny). 



1853. Flustrellaria irregularis, d'Orbigny, Pal. Frang. Terr. Cret., 

 vol. v., p. 522, pi. 724, fig. 22. 



Specimen 2 agrees very closely with d'Orbigny 's figure of 

 Flustrellaria irregularis ; and specimen 3a, encrusting Elea 

 meridiana is probably the same species. 



This species occurs in the Senonian of the Seine-Inferieure and 

 Manche. 



* Gregory, Brit. Mus. Cat., .Tarassic Bryozoa (189G), p. 157. 

 t Pal. Franr. Terr. Cret. (18.53), vol. v., Bry., p. 648, pi. 739, figs. 17-19. 

 \ Bry. Bohm. Kreid. : Dank. Ak. Wiss. Wien (1877), vol. xxxvii., pt. 2, p. 112, 

 pi. vi., Hgs. 15-21. 



