The Cretaceous Fauna of Pondoland. 283 



agree very closely with Milne-Edwards' figure and with the dimen- 

 sions given in the British Museum Catalogue of Cretaceous Bryozoa 

 (vol. i., 1899, p. 73). This species, with B. ixipyracca (d'Orbigny) 

 and B. contracta, Seeley, differs from other Cretaceous forms by the 

 length of the zooecia ; from B. papyracea (d'Orbigny) by its shorter 

 and hardly sinuous zooecia; and from B. contracta, Seeley, by its 

 smaller and more regularly cylindrical zooecia. Berenicea gracilis 

 has been identified in formations ranging from Neocomian to 

 Maestrichtian. 



Genus ELEA, d'Orbigny. 

 Elea meeidiana, sp. nov. 

 Plate XXXIII., figs. 10-12. 



Specimens 3 to 9 are zoaria consisting of bilaminar foliate growths, 

 like those of the common genus Diastopora. 



The zooecia, however, exhibit features which are characteristic of 

 the family Eleidoe. The genus of this family in which foliate forms 

 are placed is Elea. Bearing in mind the artificiality of the " genera " 

 at present used, founded upon the form of the zoarium, it is advis- 

 able to consider this form in relation to all the other species of the 

 family, disregarding zoarial habit. Specimen 4 exhibits very well- 

 preserved zooecia, and the description, unless otherwise stated, 

 refers to this specimen. 



The zooecia are of three kinds : (1) normal zooecia, (2) closed or 

 partially closed zooecia, (3) gonocysts or gonoecia. 



The normal zooecia (fig. 10) are tubular and generally long, four 

 to six times the diameter of the aperture. But the length varies 

 considerably and in places the apertures are crowded and the 

 zooecia short. The diameter of the zooecium increases rather 

 suddenly just beneath the aperture, as the transverse diameter of 

 the latter is nearly as great as that of the zooecium. The apertures 

 are sub-circular and generally the transverse diameter is greater 

 than the proximal-distal diameter. The transverse diameter is about 

 ■15 mm. The aperture is surrounded by a rim which is generally 

 sHghtly thicker distally — a feature very common among Eleids. 

 Owing to this very shght prolongation of the zooecium distal to the 

 aperture, the latter is not quite terminal. 



The closed zooecia diifer from the normal by being covered with a 

 calcareous film. This, however, in the species under consideration 

 is generally perforated by a tiny hole ; a few zooecia, however, appear 

 completely sealed (fig. 12). The closed zooecia occur in ones and 



