FIG. 16. Section of a portion of Grantia labyrinthica. (After Dendy.) 



Showing the escape of the larva from the tissues of the mother sponge into the flagellated chamber 

 of the mother ; /, flagellated chamber ; I, escaping larva ; o, opening of flagellated chamber into central 

 cavity (paragaster) of sponge. 



Flit. 17. The Amphiblastula larva of Grantia labyrinthica. (After Dendy.) 



ft, flagellated cells ; gr, granular cells. 



40 



