434 



PROCEEDINGS OF SECTION C. 



In common with the other genera described, tabulae are present 

 (T in fig. 8). In several of the loculi spherical bodies — which may be 

 sexual products resembling amphiblastulas or planulas, or possibly 

 gemmules — -occur, as noticed in a similar position in fig. 3. 



Fig. 



Lettering as in j)receding figure. Slightly etched section (along line P Q,) perpen- 

 dicular to view in Fig. 7 and nearly parallel to the " Septa," showing remote vertical 

 ''Tabula;" (T). 



The importance of this latter (flabellate) morphological type as 

 regards the classification of the Archseocyathinae, will be referred to in 

 the last section of this note. 



AFFINITIES OF THE ARCHiEOCYATHIN^. 



In the present condition of my investigation it would be premature 

 to go very fully into this question ; but certain points of interest have 

 developed already, and these will be briefly discussed. 



As will have been seen in the preceding, the classification of this 

 family is a question of great difficulty. Almost every structure of the 

 Porifera and Anthozoa is represented in one genus or another. 



