THE EUPLECTELLA, OR VENUs's SEA-BASKET. 15 



spicules from the " sarcode," i.e., the animated jelly above 

 mentioned ; c d are two of the six-rayed spicules in course 

 of formation ; and e represents the completed spicule. 



Fig. 3. SPICTJLES OF GLASS-SPONGES, AS THEY APPEAR UNDER THE 

 MICROSCOPE. 



At B are shown the spicule-f orms found in Tethya ; c 

 shows spicules of the glass-rope (Hyalonema), and D 

 shows a group of the spicules as they appear in their 

 ordinary positions. 



