346 



Cell. (Lagenipora) socialis and Cell. (Celleporelld) pygmaea, on the other hand, th 

 is on the circumference of each zooecium a small number (6—8) of widely s 

 arated, thin canals by means of which each zooecium is connected with its nei 

 hours. At the bottom of each canal there is a rosette-plate with one pore. 1 

 agreement in regard to the interzooecial connection cannot however be conside 

 as an index of a close relationship between the two species mentioned, as 

 must refer them to two different genera owing to a presumably more import 

 difference in the structure of the ocecia. 



In the majority of the species belonging to this family the ooecium cons 

 of two calcareous layers, of which the ectoooecium is as a rule provided w 

 pores. These may however be lacking in a few species, for instance in Cell, si 

 alls and in C. ramulosa the ooecia are only rarely provided with pores. In a sn 



