114 



SPONGES 



fLc. 



Sd.tr. 



ffm 



Sff.tr. 



G.C. 



Section of the body wall of Bathydorus flmbriatus, F.E.S. The spicules are omitted from 

 the drawing. x30. (After F. E. Schulze.) ex.c, excurrent canals. Other letters as in Figs. 



76, 77. 



n.c 



Section of the wall of Taegeria pulchra, F.E.S. The spicules are omitted. x20. (After F. 

 E. Schulze.) The letters as in the three preceding figures. 



