INTRODUCTION. 



17 



it. And the lumping of genera does not end here. "Waters l has 

 pointed out that in some specimens of JEntalophora, the zooBcia are 

 distributed irregularly in some places, and in regular rings round 

 the stem in others. Waters therefore regards Spiropora as a 

 synonym of JEntalophora, and this genus must therefore be merged 

 with the rest. Again, in some species of Spiropora, the apertures 



FIG. 5. Section through frond of Diastopora Zamellosa, Mich., var. cervicornis, 

 to show multiple growth. Inferior Oolite : Leckhampton. D. 2244. 



FIG. 6. A Diastopora giving off shoots in the condition of Entalophora. 

 Bathonian: Eanville. D. 2221. 



1 A. W. "Waters. On Fossil Cyclostomatous Bryozoa from Australia : Quart. 

 Journ. Gfeol. Soc. vol. xl. (1880) p. 680. 



C 



